Question: The induced emf in a DC machine while running at 7 5 0 rpm is 2 2 0 V . Calculate 4 . ( a

The induced emf in a DC machine while running at 750 rpm is 220 V. Calculate
4.
(a) assuming constant flux the speed at which the induced emf will be 250 V; and (b) the percentage increase in the field flux for an induced emf of 250 V and speed of 700 rpm.
OR

Step by Step Solution

There are 3 Steps involved in it

1 Expert Approved Answer
Step: 1 Unlock blur-text-image
Question Has Been Solved by an Expert!

Get step-by-step solutions from verified subject matter experts

Step: 2 Unlock
Step: 3 Unlock

Students Have Also Explored These Related Electrical Engineering Questions!

Q:

In Fig Q3, a D.C. shunt motor takes an armature current laj of 30A from a 500V D.C. Q3 supply. It runs at N1 = 1500 rev/min. Its total armature resistance Raj is 0.22. The motor speed is decreased by...

Q:

In Fig Q3, a D.C. shunt motor takes an armature current laj of 30A from a 500V D.C. Q3 supply. It runs at N1 = 1500 rev/min. Its total armature resistance Raj is 0.22. The motor speed is decreased by...

Q:

#4 Part A - Magnetic Field Lines and Kick Strengths . In this part of the experiment we will map the magnetic field around a permanent bar magnet and measure the strength of the magnetic field (B) at...

Q:

GERMANNA COMMUNITY COLLEGE states that the induced voltage (emf) in a circuit is proportional to the rate of change over time of the magnetic flux through that circuit. We can increase the emf by...

Q:

PHY 242 - Laboratory LABORATORY 9: FARADAY'S LAW Objectives: identify equipment and conditions that produce electromagnetic induction compare and contrast how both a light bulb and a voltmeter can be...

Q:

Introduction The objective of this project is for you to study the control and dynamics of an electric vehicle propelled by a current-controlled separately-excited dc machine. To take advantage of...

Q:

ETIZATION CURVE 200 220 V series DC motor has an armature resistance of 0.04 Q. The motor always draw 4 A from its source. The armature reaction causes 10% flux lost. Magnetization curve of the iron...

Q:

I want you to choose the correct answer to these questions, but I want an accurate and precise answer, please : 1 . - In a DC machine, a flux of 0 . 0 3 Wb per pole is generated. Given that the...

Q:

5 - ( MMJ 2 4 1 0 3 ) ii . Propose on how ( electrical energy produced by the generator ) can be further increased. Support your answer with related theoretical equations. [ Cadangkan bagaimana...

Q:

The experimental result differs from the assumption. The result shows that the ring oscillator frequencies can be grouped into two groups, where the first group is the high frequency group for the...

Q:

A partial adjusted trial balance is shown as follows for Sparks Electricity: Required a. Prepare Sparks' income statement and statement of retained earnings for the month of June. b. Prepare the...

Q:

A strength and conditioning coach for ABC University was instructing a basketball player on the proper technique to lift weights. In the middle of the instruction the coachs cell phone went off and...

Q:

16. The memory locations listed in the parameterList in a procedure header have procedure scope and are removed from the computers internal memory when the procedure ends. a. True b. False

Q:

Discussion responses to this post: The author defines the scientific method as being a method that is used without noticing that it is being used. The reason for the scientific method to be used by...