Mechanical Engineering Questions and Answers June 21, 2021

X y,A satellite is moving through deep space far from the influence of gravity. The x, y, and z axes are the principal directions of the inertia matrix, and are attached to the object. At t 0, we have the angular velocity vector about the mass center C (Oxi, Wyi, Wzi). Determine the differential equation dictating wy(t). Izz I, Ixx Iyy J

contacts the top of the cylinder A, the cylinder Just after the brake arm B in the figure is turning clockwise at 1000 rpm. The coefficient of kinetic friction between A and B is u 0.3. Find how long it takes for A to come to rest under the constant force P 40 kN. Consider the brake arm B to be in equilibrium (does not move). The total mass of

Replace the three forces shown by an equivalent forcecouple system at point A. If the forces are replaced by a single resultant force, determine the distance d below point A to its line of action. 100 N 240 N 160 N 600 mm 600 mm 600 mm

In the following figure, 1) express vector F2 in Cartesian form. 2) Find the component (projection) of a force vector F20133j12kNin the direction of vector F. Express the result as the scalar magnitude of the component. Ho 250 F50N,Replace the three forces shown with an equivalent resultant force and couple moment at point B. Sketch the structure

For the following beam, find the support reactions at the pin at B and the roller at C. 20 kNm, 6 kN 4 kNm 6 m B 6 m D 6 m E,If P 75 N and P2 100 N, use the method of joints to find the forces in all truss members ending at joints A and D. Hint you do not need the support reactions to solve this problem look for joints with no more than 2

For the shaded area in the following sketch, find the centroid with respect to the y axis (x) using the integration method. Then, find the moment of inertia of this shape about the y axis. The following formulas are provided for your use x and I fxdA. xdA JdA yx20 y x (5,5)

For the shaded area below, find the location of the centroid. Then, find the moment of inertia of the composite area about that centroid. The following formulas are provided for your use X .. 9 y 40 mm 160 mm. .4 80 mm 1, rect,cent 40 mm bh 12 80 mm and I I Ad

Block B weighs 50 lb. and the coefficient of friction between block A and the inclined plane is 0.3. What is the minimum weight of block A to keep block B from moving downward. 30 B

A 716 nut driver with a 2 12 inch diameter handle is used to install a 4 20 UNC bolt into a robotic arm. 22. Determine the circumference where the effort is applied. 23. Determine the pitch of the screw. 24. What is the mechanical advantage gained in the system 25. Ideally, how much force can be overcome if 5 lb of force is exerted 26. Why does a

The objective of this project is to develop a mathematical model for a vehicle, simulate the response of the vehicle to the engine being shut off with MATLAB or MATLABSimulink, and design appropriate stiffness values for the tireandwheel assembling. Figure 1 shows the sketch of the side section of a vehicle. To simply the model, the following

Use the BurlandBurbidge method to estimate the expected settlement for a square footing. 8 ft. by 8 ft in plan, that is at the interior of a building. Footing thickness is to be assumed to be 2 ft. and bottom of the footing is to be set 4 ft. below ground surface. This footing will have a design contact pressure of 3.5 tsf. It will bear on the

Model the microaccelerometer given in Fig 1 with the parameter values using SUGAR. Obtain the deflected figure of the micro accelerometer for an input force of 1000N applied as shown in Fig 1. Assume all elements are two dimensional. 0.5 F F1000N 2 5m Fig 1 Microaccelerometer 1m 1 m 3 m

VA The 5 oz. ball is translating with velocity 80 fts perpendicular to the bat just before the impact. The player is swinging the 31 oz. bat with angular velocity (0) 6 rads before the impact. Point C is the bats instantaneous center both before and after the impact. The distances b 14 in and 26 in. The bats moment of inertia about its cent of

8. TTT and CCT diagrams of a eutectoid steel (0.76 C) are provided below. Use the diagrams to answer the following questions. Temperature (C) Temperature (C) 800 700 600 500 400 300 200 100 800 700 600 500 400 300 200 100 0 101 0 101 A A A M(start) M(50) M(90) 1 1 M(start) Austenite M(50) M(90) 10 10 MA Eutectoid temperature P B 10 10 104 Time (s)

Water flows steadily through a wellinsulated heat exchanger inside 1.5 cm.diameter tubing. At the inlet of one side of the heat exchanger, steam is flowing at a mass flow rate of 0.9 kgs. The steams temperature is 100C and is saturated vapor. At the exit, the temperature and quality of the steam are 100C and 0.05, respectively. On the other side

Steam enters a turbine at a pressure of 6.0 MPa and temperature of 460 C. Steam exits the turbine at a pressure of 150 kPa and quality of 0.91. Steam velocity at the entrance is 100 ms and at exit is 15 ms. If the heat loss and mechanical loss are negligible, find a) The output work of turbine (work of shaft) per unit mass of flow. b) The required

What is the shape of the position tolerance zone for the .250 hole a. two planes b. a cylinder c. rectangular d. diameter

Technician A says that U-codes identify a failure with a body system function. Technician B says that B-codes are set to indicate bus network communication failures. Who is correct? Technician A only Technician B only Both Technicians A and B Neither Technician A nor B

Given below are the different specimens that will be tested in the practical session Tensile testing of Low Carbon (0.15) steel 28.0 mm long x 5.0 mm diameter,You will need to Convert the force displacement data to engineering stress vs engineering strain (210). Plot a graph and label axes (110). Determine the value of ultimate tensile stress

b) Calculate the value of t4s. dv dt c) Find the second derivative at t2s and (dv) dt

Propane is combined with 50% excess air in a mixer before being fed to a furnace. The propane (C3H5) enter the mixer at 25 degrees celsius at a rate of 300Kg/h and the air enters the mixer at 500 degrees celsius. Heat is lost form the mixer to the surroundeings at a rate of 8.5KW. Given MW(propane= 4.4; Cp(Propane)=0.068032KJ/mol. degrees celsius;

H(kJmol) Reference state Gas, Pref 1 atm, Tref 25C T 0 25 100 Air 02 N H 0.72 0.73 0.73 0.72 0.73 0.92 0.84 0.00 0.00 0.00 2.19 2.24 2.19 200 5.15 5.31 5.13 300 8.17 8.47 8.12 0.00 CO2 H2O 0.00 0.00 2.16 2.19 2.90 7.96 5.06 5.16 7.08 8.17 11.58 0.00 2.54 6.01 9.57 400 11.24 11.72 11.15 10.89 11.25 16.35 13.23 500 14.37 15.03 14.24 13.83 14.38

Question

6 The displacement, y (m), of a body in damped oscilla tion is y 2 e sin 3t . The task is to a) Use the Product Rule to find an equation for the ve dy locity of the object if V dt

In a cubic metallic block of 1 mm x 1 mm x 1 mm, there is only a single circular loop of 0.2 mm radius. What is the relevant dislocation density? b) What would be the average dislocation velocity if the singe crystal is plastically deformed at a shear strain rate of 10 -3 s -1 and the total dislocation density is 10 13 m -2 ? Assume that the

Discuss the benefits of public transport in relation to reducing carbon emissions. What are the limitations of public transport, i.e. will it always produce a reduction in carbon emissions?

Briefly explain the key factors that should be considered in relation to battery sizing. Will battery capacity vary based on discharge rate? And if so why? List the three main types of suitable deep-cycle batteries.

Different types of power plants are used for different generating purposes depending on their capacity (e.g. peaking power), list and explain the three main types.

A beam is supported by a pin at A and a roller at B. It is subjected to a concentrated force F and two distributed loads as shown. Determine the support reactions (magnitudes). Work in kN

A A w3(1x225) kNm 5 m F 2 kN 1 m 4.2 m 1.8 kNm B X

Discuss the process of undertaking an LCA on a renewable energy system. You should mention the key steps involved (goal and scope definition, inventory analysis, allocation, etc.), as well as guidance on how an LCA report should be interpreted. What would be expected main sources of carbon emissions for such systems and how could the environmental

Maximising solar gains can have numerous advantages. Discuss those, but also reflect on the disadvantages of such a strategy. Also reflect on how we can manage the problem.

A bus company, which currently operates a fleet of diesel buses in a rural area is considering replacing some of its fleet with more environmentally friendly options. Critically reflect on the on the differences between switching to: a) hydrogen fuelled buses, b) biofueled buses and c) Battery electric buses?

Discuss the key factors we need to consider when designing an energy storage system for a remote off grid renewable energy system. What level of autonomy will be needed? What factors do we need to consider as regards the battery design? What are the 3 main times of power demand we need to consider with regard to an energy grid. How will a

As part of the agreement with the Teacher's Union that led to education cuts last year, any new funding this your must go to restoring cuts before new projects are undertaken. Thus the computers cannot be purchased unless the cuts to sports and music are abo matured You are lacked to develop a decision model that will maximise public support (Le.

A brake drumwheel assembly on a car has a moment of inertia of 0.42 kgm. When car is traveling at 18ms a normal force equal to 95N is applied through the brake block on the wheel drum. The coefficient of friction between the brake block and the wheel drum is 0.1. The radius of the wheel is 300mm and the radius of the drum is 175mm. The car has

Your company wishes to compress air from 101.3 kPa and 27C to 726 kPa. Your boss suggests that you use a reversible, rotary compressor powered by an existing motor which can provide 186 kW power input. They are searching for the most effective design and suggest operating the compressor isothermally which requires a cooling water jacket. Assume

D. Natural gas (approximated as propyne (C3H4)) is used to provide the energy in the boiler of a steam power plant to add energy to the working fluid (water). The operators have elected to provide 20 excess air to the combustor. The C3H4 enters at standard conditions, 25C and 1 atm, and the air is preheated to 157C and 1 atm. The combustion gases

1 Water enters a continuous flow gas calorimeter at 65 F and leaves at 95 F. During a five minute run 0.253 ft 3 of natural gas is burned at 70F and 0.04 inHg (gage pressure). Also, 6200 grams of heated water and 9.5 grams of condensate are collected. Room and shell temperatures are measured at 71 F and 75 F respectively. Assuming the average

The operating point in a pumping system is identified by a. Point of intersection of system curve and efficiency curve b. Point of intersection of pump curve and system curve c. Point of intersection of pump curve and theoretical power curve d. Cannot be determined by the pump characteristic curves

Overall efficiency of a centrifugal pump is the ratio of a. Energy available at the impeller to the energy supplied to the pump by the prime mover b. Actual work done by the pump to the energy supplied to the pump by the prime mover c. Energy supplied to the pump to the energy available at the impeller d. Manometric head to the energy supplied by

What is the impact on flow and pressure when the impeller of a pump is trimmed a. Flow decreases with increased pressure c. Both flow and pressure decrease b. Both flow and pressure increase d. None of the above

The following diagram represents a typical production system. The reservoir condition is undersaturated and P_ is greater than the bubble point pressure during production. The reservoir pressure at point 6 is maintained at a constant level through water injection. Pressure at the separator is set at a constant level a. How would you calculate the

APtubing Pwh FO 3 flowline Horizontal Flowline Psep 1 01 Separator Gas Vertical or inclined tubing porous media APres Tank a to 6

Hot engine oil at 80C flows in a 2cm thin wall copper pipe. oil velocity is 1m/sec. water at 20C flows across the pipe at 2m/sec. make reasonable assumptions and estimate a. approximate heat transfer coefficient inside of pipe b. approx heat transfer coefficient on the surface of the pipe c. overall heat transfer coefficient d. how would you

We can design a pump lifting method for this well. We assume that the downhole separation is perfect and water has a specific gravity of 1.05; viscosities of oil and water are assumed to be 2cp and 1 cp, respectively. But, the pump can be lowered to a maximum depth of 6000 ft. Calculate the pump head needed to keep the well flowing at the tubing

The environment aspects represent major concerns to the public and to the engineers, and it will continue to be more of a concern in the years to come. One of the main issues associated with the environmental protection is recycling of metals and plastics. As the consumption of pop drinks bottled in Al cans is very significant (about 200 trillion

What is are the voltages and currents across each element in the circuit?

a f 12 V R1 820 www R6 220 b R3 2 W R2 390 R5 470 C d R4 680

The following plot shows the pvT diagram of PA 66. Assume the melt is injected at 275 C to a maximum packhold pressure of 800 bars. The 800bar packhold pressure is maintained until the gate freezes off, at which point the part is at an average temperature of 175 C. Then, the pressure drops to 1 bar as the part cools inside the cavity until the

Both solid circular shafts resist the applied torque T. The left shaft is C86100 Bronze with a radius of 7 cm, and the right shaft is 2014T6 Aluminum with a radius of 5 cm. Determine the reaction at A. Give your answer using 4 significant digits and units of kNm. Use JBronze 3.771x105 m and JAluminum 9.817x106 m. a 2 m Tb40 kNm 3 m

In a gas transmission pipeline, natural gas (taken as methane) is compressed from 1,00 kPa, 25 C to 10 Mpa by a 4,000 kW natural fueled gas turbine engine. The compressor efffiency ia 90% and the efficecbny of the engine is 35%. A - Mass Flow of the natural gas through compressor B - Mass flow of of natural usage used by the engine as fuel

A column fixed at both ends has a minimum radius of gyration r 29.4 mm, crosssectional area 3,230 mm, and length 1.94 m. It is made of a material whose compression stressstrain diagram may be approximated by a series of tangentlike segments as shown below. Determine the critical load. O (MPa) 350 280 210 140 70 0 1 E46.7 (10) E175 (109) E28 (109)

The following questions refer to these phase diagrams shown here Temperature C 2200 2000 1800 1600 1400 1200 1000 0 (HD HN 40 60 Composition (wt 0 T 18 V Temperature (C) 2800 2400 2000 MgO (56) MgO (ss) Liquid Composition (mol AlO) 20 1600 Mg(s) MBAI 04 (58) 40 50 80 T 5000 Liquid MgAl0 (ssl Liquid Al2O3 4500 Liquid 4000 3500 MgAl (58) 3000

On the axes shown below, draw the BH plot (make sure to label the axes) you would expect to obtain for a ferromagnetic material at room temperature. Label the key points and explain your sketch, i.e. explain why you drew it the way you did, and explain what is happening at the magnetic dipole scale.

(a) Draw a suitable linear graph for the entire system shown in Figure P2(b), mark the variables and parameters (you may introduce new, auxiliary variables but not new parameters), and orient the graph (using branch arrows). Note First, you may simplify the system, as appropriate, if you wish.,(a) (1) (b) Field (Steady) Ras Las Jm. Km leee 1kit m

3. What is the moment of inertia about the xaxis going through the centroid Notice the part is symmetric (do not need to calculate where the centroid is). 12 mm 18 mm 18 mm 12 mm A 22 mm 72 mm B 1

Complete the table below to show your knowledge of the following workshop tools, their uses, limitations and operating procedures. Tool Name Types List two (2) for each. Uses of tool List two (2) for each. Limitations List two (2) for each. Operating procedure Press Impact guns Air ratchet Blow gun

1. For the frame and the loading shown in the figure, calculate the internal forces and moments at point F. AO 10 in. F O 100 lb I EO B 4 in. C D A 5 in. A 5 in. Y

For the cylindrical material shown below that is subjected to uniaxial tension with o 90 MPa, d 12 mm, L 200 mm, E 1200 MPa, v0.35, determine the axial and transverse deformation at the free end of the beam. I VO d

During the last 0.05 seconds of a golfers swing (between t and t) he rotates his wrists to increase the angular velocity of the golf club. During this phase the angular velocity increases from 10 rads up to 25 rads at the moment of ball impact. Assume that the shaft of the club has no mass, but the head has a mass of m0.2 kg which is 1 m away from

Calculate the MOMENT at the center of the beam using the above influence line when the truck load is applied as below. (8 points) 20 KN 40 kN 5 m 25 KN 10 m B

40 kN A beam is used for transportation. A is a roller and B is a pin. 2 m 20 KN 25 kN 1 m LO 10 m B Draw influence line for bending moment at the center of the beam

MUST use the Force Method, and determine the reaction at A and B in the statically indeterminate beam. Note B is a fixed support and A is a roller support. Use Appendix if appropriate. The beam selfweight is ignored. 4 m 10 Nm 4 m B

MUST use the principle of virtual work, and determine the displacement of B (not A) in the cantilever beam. Note that C is a fixed support. (E107 Nm and the moment of inertia I 0.1 m) A 2 m B 12 Nm 6m

A direct acting proportional pressure controller has a gain of 3, a range of 0-40 bar and is set to control at 25 bar. When the measured value and the desired value are equal, the output signal is 60%. Determine the input pressure required to produce controller output values of 10% and 90%.

The mass M shown in FIGURE 5 is to be held in position by two hydraulic pistons (A and B) which exert forces F1 and F2 (respectively) onto the mass. The total for FT (where FT = F1 + F2) is to be controlled at a constant value. The force F2 is uncontrolled, it is set at a nominal value however this may vary due to changes in the pressure of the

Piston A F Mass M F2 Piston B

Which statement is NOT true about static port heating? a. Usually not required due to static port placement. b. May be electrically heated. c. Not needed due to alternate static source availability. d. Not needed since the pitot tube is heated.

What is the commonest configuration of reciprocating engines in currently produced certificated aircraft? a. Inline. b. Opposed. c. V-type. d. Radial

How is the compressor of aircraft turbocharging system driven? a Belt drive. b. Turbine powered by engine exhaust. c. An electric motor. d. None of the above.

What does the T in the circle mean in the image below B 4.50B 45 All points on a gauge plate put on top of the angled surface must be between two planes 0.5mm apart All points on the surface must be between two planes 0.5mm apart Nothing because there is only one datum in the feature control frame The average angle measured along the length of the

A standing broadjumper takesoff with a velocity of 4 ms at an angle of 35 from horizontal. What is the maximum vertical rise of her center of mass How far did she travel in the air Neglect air resistance.

A steel tube, 16 mm internal diameter, has an outside diameter of 48 mm and a length of 20 mm. A slightly oversize solid plug is pressed into the bore of the tube. Determine the maximum difference in diameter between the plug and the tube if the maximum stress in the tube is not to exceed 420 MPa. Assume Young's modulus E = 200 GPa and Poisson's

a) A steel disc of uniform thickness has a diameter of 1.6 m and rotates at 2400 rpm. Determine the radial and circumferential stresses at the center and the outer radius of the disc. b) A central hole of 0.32 m diameter is then drilled on the disc. Determine the circumferential stresses on the inner and outer radius. Assume Poissons ratio u 0.33

What are some issues related to joining thick metal sections through welding steels? State 3 major issues briefly in terms of formation of undesirable constituents, corrosion, difference in mechanical properties etc.

Draw the control circuit complete with referencing number and terminal number for an overhead crane according to the sequence described below . . . Figure 5 An overhead crane Press pushbutton S1 (NO), motor will move forward and green pilot light H1 will turn on for 10 seconds. This is to allow the motor to reach the end limit of the crane. After

An axial thrust of 1.6 kN is applied to the clutch. Given that, the outer contact radius, and the inner contact radius is, carry out the following (a) Establish how many discs will be engaged during operation. 2 marks (b) Determine the friction torque required to operate the clutch Assume the clutch operates under uniform pressure. 4 Marks (c)

AV S OFF VA CON 24 V L m m 1 kQ 1kQ,In the circuit shown in the figure below, a voltmeter is connected to the output terminals. Determine the voltage (in V) indicated by the voltmeter. (Enter your answer as a positive or negative number without the units.)

A tensile test generates the stressstrain diagram shown here. Stress (MPa) 2000 1000 0.000 10 Stress 0.020 psi 300 200 100 MPa 2000 1000 L 0.000 0.005 0.010 0.015 0.040 Strain Strain 0.060 0.080 300 200 100 Stress (10 psi) Assume a tensile specimen was originally 10 cm long with 2 cm x 2 cm square shape cross section.,Mechanical property Youngs

Consider the full factorial coefficients in the provided equations for the chemical yield. If the control variables (the ones that have the high impact on the experiment) are Temperature (T), Pressure (P), and Reaction time (R), what combination of inputs (1 or 1) will likely generate the highest yield Y 67 44 XT2 XR 18 XpXR O Temp to max (1),

In the context of counterflow and parallel flow, when might Tc, o exceeds Th, o O This never happens in either counterflow or parallel flow. OTc, o can exceed Th, o in counterflow but not in parallel flow. O Tc, o can exceed Th, o in parallel flow but not in counterflow.

What are you checking when you momentarily move both magneto switches to the "off" position at idle before engine shutdown? a. Proper operation of the magneto switches. b. P-lead continuity. c. Proper fuel mixture; verified by the lack of backfiring. d. Both A and B. e. All of the above

What is true about ignition in turbine/Brayton cycle engines: a. igniters are on during start and are then off for normal operation. b. In normal operation combustion is continuous. c. Ignition takes place in the combustion chamber. d. All of the above

Starter-generators: a. Provide starting rotation for smaller turboprops. b. Disengage from the engine when the engine reaches self-sustaining speed. c. Must have an external electrical power source

A square plate of room temperature has a round hole in it. The hole is filled with a plug of the same material and the same thickness as the square plate. The plug exactly fits the hole if it is cooled down I degrees from room temperature. After a while the plug assumes the room temperature again and is stuck in the hole. E V a a Assume the

Assume a simple cubic crystal structure with x 100, y 010, and z 001. Sketch the unit cell for this structure complete with identified xyz directions. In the unit cell, sketch the following two cases, identify the dislocation types (i.e., edge or screw), and determine whether the dislocation interactions affect the mobility of the reacting

About the microstructure of cathodes in Li ion batteries, which one of the following requirements is not necessary A) Li ions can reach most particles of active cathode material (such as Li1xC0O2). B) Electrons can reach most particles of active cathode material. C) The average size of active cathode material particles should be small to speed up

In a geometric tolerance frame, if there is no modifier shown next to the geometric tolerance, what modifier is understood a. MMC b. LMC C. P d. RFS

A team of mechanical engineers has been given the task of designing a piping system for a chemical plant that requires a centrifugal pump to efficiently pump 500 gallons of water per minute (gpm). After searching through Tacos pump catalog, they have chosen the Taco Model 4013 FI Series centrifugal pump with a 16.75inch impeller. However, before

ATF Pump Clutch Table B R IKH C B R B Wout Chain in ,The stick diagram of a 4speed FWD AT and the clutch table are shown in the drawing. The 2nd gear ratio and the final drive are 1.61 and 2.94 respectively. The tire radius is 11 inches and the chain ratio is 1.0. The vehicle frontal projected area is 22 ft and the air drag coefficient is 0.30.

The bore through a precision steel gear a 10.8 x 106 m(m C) is manufactured using a hard turning process. The bore diameter specification is 25 mm 0.005 mm (25.005 mm maximum and 24.995 mm minimum). Temperature measurements confirm that the gear temperature increases by an average of 50C during machining. Assume that the ambient temperature of

A can with a hemispherical bottom is made by a hybrid process combining stretchforming followed by deep drawing in the same punch stroke, starting with a 1.0 mm thick Ti alloy blank. In the first stage (left), the hemispherical bottom is stretchformed over the end of the punch by clamping the sheet tightly in the hold down. In the second stage

4. A planestrain machining operation is modeled as a 2dimensional orthogonal cutting process. Two different cutting conditions are shown in Figure 1 and Figure 2 in terms of the undeformed and deformed chip thicknesses, the shear angle () and the tool rake angle (a). 0 in tool workpiece tool workpiece FIGURE 1 Cutting process 1 FIGURE 2 Cutting

A beam loading with external moment and external force is shown in Figure B.5 below, (a) Determine the reactions at A for the beam which is subjected to the load combination shown. (b) Determine the bending moment and shear force as functions of x (x measured from point A). (You dont need to plot bending moment and shear force diagrams.) (16

Consider a motorcyclist traveling at 60 mph through 20C static air. The outer surface of the cyclists jacket is 28C and 0.5 m. The convection heat transfer coefficient is 50 Wm2K. Which one of the following most closely represents the heat flux from the surface to the jacket, in units of Wm (a) 200 (b) 400 (c) 600 (d) 800 1000

A rotating machine with Mass M1 200 kg is designed to operate in the speed range of 2400 to 4000 RPM. However, the machine is found to oscillate violently at its peak at 3000 RPM due to a rotating unbalance on the machine. (a) Design a vibration absorber (i.e. determine M2 and K2) tuned to 3000 RPM with the smallest weight possible such that the

A triplex 613 power pump is operating at 60 stkmin. Its mechanical efficiency is 89. Calculate 1 The pump factor in bblstk and galstk at 95 volumetric efficiency 2 The flow rate in bblmin and galmin 3 The pump power if the operating pressure is 3,500 psi 4 The prime mover power 5 Time and number of strokes to discharge 90 of the rectangular tank

A formation at a depth of 6,400 ft is to be drilled using 6,000 ft, 5in. drill pipe (wt. 19.5 lbft) and 400 ft 8in. drill collar (wt. 220 lbft) with a 13.3 ppg mud. Bit records for 3 different bits are shown below. Find the suitable bit if the rig rental cost is 36,000day, hook HP 280 HP and it takes 25 sec. to screw or unscrew one stand. Bit

P,Consider the buckling problem shown in the figure below. The beam is of length L, stiffness E and moment of inertia . Using the EulerBernouilli beam theory, compute the exact first three buckling loads. Plot the transcendental function whose first three roots give you the first three buckling loads.

HIGH PRESSURE LINE LOW FLOW PUMP 1. This question uses the tube design concepts. We have seen this circuit as follows. The pressure relief valve setting is 11644 kPa. Lets assume that the circuit uses the same size of the tube everywhere. The flow rate of the high pressure, low volume pump is 0.001 ms. The maximum speed for the tube is 6.1ms. The

A copper wire is subject to tension forces and its diameter is reduced by 1 %. Is that deformation elastic or plastic?Explain

Who has the duty to ensure every employer and every worker performing work on the 'project' complies with the OHSA and the associated Regulations? Constructor Joint Health and Safety Committee Worker Employer

What is the shape of the tolerance zone for the flatness tolerance? A. two lines B. a cylinder C. a plane D. two planes

A cylinder is being compressed to a final height of 50 mm and a diameter of 25 mm. The pressure at the punch is 200 MPa. What is the pressure at the middle of the cylinder if compaction takes place (a) unlubricated (k =0.6 and u =0.2); and (b) lubricated to almost frictionless conditions?