The ABC Company is planning a new product line and will build a new plant to manufacture the parts for a new product line. The product line will include 50 different models. Annual production of each...

A voltage of 24 V is applied to a DC servomotor whose torque constant = 0.115 N-m/A and voltage constant = 0.097 V/(rad/sec). Armature resistance = 1.9 ohms. The motor is directly coupled to a blower...

What is the difference between powered lead through and manual lead through in robot programming?

A robot performs a loading and unloading operation for a machine tool. The work cycle consists of the following sequence of activities: The activities are performed sequentially as listed. Every 30...

In Example 10.2 in the text, suppose that the vehicles operate according to the following scheduling rules: (1) vehicles delivering raw work parts from station 1 to stations 2, 3, and 4 must return...

Identify the three application areas of automated storage/retrieval systems.

An AS/RS with one aisle is 300 ft long and 60 ft high. The S/R machine has a maximum speed of 300 ft/min in the horizontal direction. It accelerates from zero to 300 ft/min in a distance of 15 ft. On...

What is the difference between fixed routing and variable routing in manufacturing systems consisting of multiple workstations?

A plastic injection molding plant will be built to produce 6 million molded parts per year. The plant will run three 8hour shifts per day, five days per week, 50 weeks per year. For planning...

A worker is currently responsible for tending two machines in a machine cluster. The service time per machine is 0.35 min and the time to walk between machines is 0.15 min. The machine automatic...

A factory production department consists of a large number of work cells. Each cell consists of one human worker performing electronics assembly tasks. The cells are organized into sections within...

What is the difference between a unitized production line and a link line?

An eight-station rotary indexing machine performs the machining operations shown in the accompanying table, together with processing times and breakdown frequencies for each station. The transfer...

The uptime efficiency of a 20 station automated production line is only 40%. The ideal cycle time is 48 sec, and the average downtime per line stop occurrence is 3.0 min. Assume the frequency of...

An automated assembly machine has four workstations. The first station presents the base part, and the other three stations add parts to the base. The ideal cycle time for the machine is 3 sec, and...

A GT machine cell contains three machines. Machine 1 feeds machine 2 which is the key machine in the cell. Machine 2 feeds machine 3. The cell is set up to produce a family of five parts (A, B, C, D,...

What is the difference between the primary and secondary handling systems that are common in flexible manufacturing systems?

A producer of cell phones checks each phone prior to packaging, using seven critical-to-quality (CTQ) characteristics that are deemed important to customers. Last year, out of 205,438 phones produced...

Annual demand for a madetostock product is 60,000 units. Each unit costs $8.00 and the annual holding cost rate is 24%. Setup time to change over equipment for this product is 6 hr, and the downtime...

The monthly demand for a part produced for an automotive final assembly plant is 16,000 units. There are 20 working days in February and the effective operating time of the plant is 900 min per day...

Compare Porter's three generic strategies.

1. Draw a diagram of the supply chain for a fish fillet from the ocean to the restaurant table in Japan. Then include the flow of information into the picture. Describe where IT is used to enable the...

An injection-molding machine used to produce 25 different plastic molded parts in a typical year. Annual demand for a typical part is 20,000 units. Each part is made out of a different plastic (the...

Describe Porter's value chain model. Differentiate between Porter's competitive forces model and his value chain model.

Unmanned aerial vehicles (UAVs) are being developed to operate in the air autonomously for long periods of time. By autonomous, we mean that there is no interaction with human ground controllers....

The position control system for a spacecraft platform is governed by the following equations: d2p / dt2 + 2dp / dt + 4p = v1 = r - p d/dt = 0.6v2 v2 = 7v1 The variables involved are as follows: r(t)...

Find the transfer function Y(s)/Td(s) for the system shown in Figure E2.27. T4LS) G,(s) RIs H(s) FIGURE E2.27 System with disturbance.

A four-wheel antilock automobile braking system uses electronic feedback to control automatically the brake force on each wheel [15]. A block diagram model of a brake control system is shown in...

Determine the transfer function Y1(s)/F(s) for the vibration absorber system of Problem P2.2. Determine the necessary parameters M2 and k12 so that the mass M1 does not vibrate in the steady state...

Consider the block diagram in Figure CP2.10. Create an m-file to complete the following tasks: (a) Compute the step response of the closed-loop system (that is, R(s) = 1/s and Td(s) = 0) and plot the...

Determine the state variable matrix equation for the circuit shown in Figure P3.6. Let x1 = v1, x2 = v2, and x3 = i. 4 kn 2 nH kn Oi FIGURE P3.6 RLC circuit.

An automatic depth-control system for a robot submarine is shown in Figure P3.7.The depth is measured by a pressure transducer. The gain of the stern plane actuator is K = 1 when the vertical...

A closed-loop system is used in a high-speed steel rolling mill to control the accuracy of the steel strip thickness. The transfer function for the process shown in Figure E4.13 can be represented as...

A robotic arm and camera could be used to pick fruit, as shown in Figure E4.3(a). The camera is used to close the feedback loop to a microcomputer, which controls the arm [8, 9]. The transfer...

A magnetic disk drive requires a motor to position a read/write head over tracks of data on a spinning disk, as shown in Figure E4.4. The motor and head may be represented by the transfer function...

A closed-loop transfer function is (a) Determine the steady-state error for a unit step input R(s) = 1/s. (b) Assume that the complex poles dominate, and determine the overshoot and settling time to...

A system has a characteristic equation s3 + Ks2 + (1 + K)s + 6 = 0. Determine the range of K for a stable system.

A feedback system with negative unity feedback has a loop transfer function (a) Determine the closed-loop transfer function T(s) = Y(s)/R(s). (b) Find the time response, y(t), for a step input r(t) =...

A negative feedback system has a loop transfer function L(s) = K(s + 2) / s(s - 1). (a) Find the value of the gain when the of the closed-loop roots is equal to 0.707. (b) Find the value of the gain...

A space telescope is to be launched to carry out astronomical experiments [8]. The pointing control system is desired to achieve 0.01 minute of arc and track solar objects with apparent motion up to...

The control of the spark ignition of an automotive engine requires constant performance over a wide range of parameters [15]. The control system is shown in Figure DP6.1, with a controller gain K to...

A "paper-pilot" model is sometimes utilized in aircraft control design and analysis to represent the pilot in the loop. A block diagram of an aircraft with a pilot "in the loop" is shown in Figure...

The feedback system shown in Figure AP7.13 has two unknown parameters K1 and K2. The process transfer function is unstable. Sketch the root locus for 0 ¤ K1, K2 Figure AP7.13 An unstable plant...

Control systems for maintaining constant tension on strip steel in a hot strip finishing mill are called "loopers." A typical system is shown in Figure P7.16. The looper is an arm 2 to 3 feet long...

An attitude control system for a satellite vehicle within the earth's atmosphere is shown in Figure P7.6. The transfer functions of the system are and (a) Draw the root locus of the system as K...

Determine the transfer function of the op-amp circuit shown in Figure P8.26. Assume an ideal op-amp. Plot the frequency response when R1 = 9k . R2 = 1 k, and C = μF

A compact disc player for portable use requires a good rejection of disturbances and an accurate position of the optical reader sensor. The position control system uses unity feedback and a loop...

A unity feedback control system has a loop transfer Function Determine the phase margin, the crossover frequency, and the gain margin when K - 1300. L(s) = Gc(s)G(s) S(S + 2)(s + 50)

A rover vehicle designed for use on other planets and moons is shown in Figure DP7.12(a) [21]. The block diagram of the steering control is shown in Figure DP7.12(b), where (a) When Gc(s) = K, sketch...

Consider the feedback system shown in Figure DP7.14. The process transfer function is marginally stable. The controller is the proportional-derivative (PD) controller Gc(s) = KP + KDs. (a) Determine...

An integrated CMOS digital circuit can be represented by the Bode diagram shown in Figure E9.5. (a) Find the gain and phase margins of the circuit. (b) Estimate how much we would need to reduce the...

The possibility of overcoming wheel friction, wear, and vibration by contactless suspension for passenger-carrying mass-transit vehicles is being investigated throughout the world. One design uses a...

A DC motor controller used extensively in automobiles is shown in Figure P8.19(a). The measured plot of Q(s)/I(s) is shown in Figure P8.19(b). Determine the transfer function of Q(s)/I(s). FIGURE...

A unity feedback system has a loop transfer function where K = 1 / 2and T = 1. The polar plot for Gc(jÏ)G(jaÏ) is shown in Figure E9.24. Determine whether the system is stable by using the...

The heading control of the traditional bi-wing aircraft, is represented by the block diagram. (a) Determine the minimum value of the gain K when Gc{s) = K, so that the steady-state effect of a unit...

A 255-GB disk has 65,536 cylinders with 255 sectors per track and 512 bytes per sector. How many platters and heads does this disk have? Assuming an average cylinder seek time of 11 ms, average...

For each of the following system calls, give a condition that causes it to fail: fork, exec, and unlink.

Give an example of a deadlock taken from politics.

Which constructs in a Presentation-Layer ER diagram cannot be directly mapped to a logical schema? What is required to represent these constructs in a Design-Specific ER diagram?

What is the difference between an exclusive arc and an inclusive arc?

Consider the Presentation Layer ER diagram. a. Identify the base and weak entity types. What is (are) the unique identifier(s) of each entity type? Which unique identifiers are composite attributes?...

Consider the following Presentation Layer ER diagram. a. Identify all entity types that at one time or another function as a superclass. b. List the superclass entity type and subclass entity type(s)...

This exercise refers to the relations R1 and R2 given below. Show the relations created as a result of the following relational algebra operations Relation R1 Rl.a R1.b R1.c 30 a 20 45 b 32 75 a 24...

Identify the set of functional dependencies in the relation instance CAR shown below. Does this constitute the minimal cover for the set of functional dependencies present in CAR? If it is not a...

While browsing at Billy Bob's computer store, you overhear a customer asking Billy Bob what is the fastest computer in the store that he can buy. Billy Bob replies, "You're looking at our...

On the VAX SBI, the lowest-priority device usually has the lowest average wait time. For this reason, the processor is usually given the lowest priority on the SBI. Why does the priority 16 device...

Draw and explain a timing diagram for a PCI write operation.

Consider a relational schema with three relation schemas: DRIVER (Dr_license_no, Dr_name, Dr_city, Dr_state), TICKET_TYPE (Ttp_offense, Ttp_fine) and TICKET (Tic_ticket_no, Tic_ticket_date,...

Describe a simple technique for implementing an LRU replacement algorithm in a four-way set-associative cache.

Four benchmark programs are executed on three computers with the following results: The table shows the execution time in seconds, with 100,000,000 instructions executed in each of the four programs....

Consider a memory system with the following parameters: Tc = 100 ns Cc = 10-4 $/bit Tm = 1200 ns Cm = 10-5 $/bit a. What is the cost of 1 Mbyte of main memory? b. What is the cost of 1 Mbyte of main...

A two-way set-associative cache has lines of 16 bytes and a total size of 8 kbytes. The 64-Mbyte main memory is byte addressable. Show the format of main memory addresses.

The following table, based on data reported in the literature [HEAT84], shows the execution times, in seconds, for five different benchmark programs on three machines. a. Compute the speed metric for...

A processor accesses main memory with an average access time of T2. A smaller cache memory is interposed between the processor and main memory. The cache has a significantly faster access time of T1...

A computer has a cache, main memory, and a disk used for virtual memory. If a referenced word is in the cache, 20 ns are required to access it. If it is in main memory but not in the cache, 60 ns are...

On the Motorola 68020 microprocessor, a cache access takes two clock cycles. Data access from main memory over the bus to the processor takes three clock cycles in the case of no wait state...

Consider a hypothetical microprocessor generating a 16-bit address (for example, assume that the program counter and the address registers are 16 bits wide) and having a 16-bit data bus. a. What is...

Consider a computer system that contains an I/O module controlling a simple keyboard/printer teletype. The following registers are contained in the processor and connected directly to the system bus:...

For the hexadecimal main memory addresses 111111, 666666,BBBBBB, show the following information, in hexadecimal format: a. Tag, Line, and Word values for a direct-mapped cache, using the format of...

Consider a 32-bit microprocessor that has an on-chip 16-KByte four-way set-associative cache. Assume that the cache has a line size of four 32-bit words. Draw a block diagram of this cache showing...

For the Hamming code shown in Figure 5.10, show what happens when a check bit rather than a data bit is in error? Bit position Position number Data bit Check bit 12 10987 6 53 2 1100 101 1010 1001...

For a compact disk, audio is converted to digital with 16-bit samples, and is treated a stream of 8-bit bytes for storage. One simple scheme for storing this data, called direct recording, would be...

A DMA module is transferring characters to memory using cycle stealing, from a device transmitting at 9600 bps. The processor is fetching instructions at the rate of 1 million instructions per second...

A 32-bit computer has two selector channels and one multiplexor channel. Each selector channel supports two magnetic disk and two magnetic tape units. The multiplexor channel has two line printers,...

Given x = 0101 and y = 1010 in twos complement notation (i.e., x = 5, y = -6), compute the product p = x y with Booth's algorithm.

Prove that the multiplication of two n-digit numbers in base B gives a product of no more than 2n digits.

Express the following numbers in IEEE 32-bit floating-point format: a. -5 b. -6 c. -1.5 d. 384 e. 1/16 f. -1/32

Suppose we wished to apply the x86 CMP instruction to 32-bit operands that contained numbers in a floating-point format. For correct results, what requirements have to be met in the following areas?...

Convert the following formulas from infix to reverse Polish: a. A + B + C + D + E h. (A + B) (C + D) + E c. (A B) + (C D) + E d. (A - B) (((C - D E)/F)/G) H

For each of the following packed decimal numbers, show the decimal value: a. 0111 0011 0000 1001 b. 0101 1000 0010 c. 0100 1010 0110

Pipelining can be applied within the ALU to speed up floating-point operations. Consider the case of floating-point addition and subtraction. In simplified terms, the pipeline could have four stages:...

Consider the "in-order-issue/in-order-completion" execution sequence shown in Figure 14.13. a. Identify the most likely reason why I2 could not enter the execute stage until the fourth cycle. Will...

Figure 14.14 shows an example of a superscalar processor organization. The processor can issue two instructions per cycle if there is no resource conflict and no data dependence problem. There are...

Yeh's dynamic branch prediction algorithm, used on the Pentium 4, is a two-level branch prediction algorithm. The first level is the history of the last n branches. The second level is the branch...

Show the micro-operations and control signals in the same fashion as Table 15.1 for the processor in Figure 15.5 for the following instructions: ¢ Load Accumulator ¢ Store Accumulator...

A simple processor has four major phases to its instruction cycle: fetch, indirect, execute, and interrupt. Two 1-bit flags designate the current phase in a hardwired implementation. a. Why are these...

Consider the pipeline depiction in Figure 12.13b, which is redrawn in Figure 17.25a, with the fetch and decode stages ignored, to represent the execution of thread A. Figure 17.25b illustrates the...

Consider an SMP with both L1 and L2 caches using the MESI protocol. As explained in Section 17.3, one of four states is associated with each line in the L2 cache. Are all four states also needed for...

What organizational alternative is suggested by each of the illustrations in Figure 17.24? Figure 17.24 Diagram for Problem 18.9 (b) (d) (a) (c)

An application program is executed on a nine-computer cluster. A benchmark program took time T on this cluster. Further, it was found that 25% of T was time in which the application was running...