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Electrical Drives and Controls (EDC) MCQs: 224 Questions & Answers in Engineering

224 Electrical Drives and Controls (EDC) MCQs in Engineering with answers & explanations. Page 6. Practice objective questions for competitive exams, intervi… Use the answer toggle below to show or hide all solutions, tap an option to check one question, or open a question for its own page.

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Electrical Drives and Controls (EDC) MCQs: 224 Questions & Answers in Engineering

If induction motor air gap power is 1.8 KW and gross developed power is .1 KW, then rotor ohmic loss will be KW.

Calculate the time period of the waveform v(t)=12sin(8πt+8π÷15)+144sin(2πt+π÷6)+ 445sin(πt+7π÷6).

A single-phase half wave voltage controller consists of

In the below given voltage controller circuit

The below shown controller circuit is a

In the below given voltage controller circuit

-Φ fully controlled rectifier is

to protect them from dust and contamination.

voltage of a dc machine is a function of its magneto-motive force.

compound dc motor is shown below. What conclusions can be made?

It is impossible to start a differential compounded dc motor.

compound motor and he has been asked to make it start. How will he try?

with compensating winding has a field current of 5 A to produce a voltage of 250 V at 1200 rpm. What will be the shunt field current of this machine at no load?

many types?

b) position, then the

Passive torques always oppose the motion of the driven machine.

Torque inversely varies with the speed in the windage load torque component.

Which of the following is the best braking method?

Choose the correct one. (* stands for multiplication, J represents the moment of inertia, w represents angular speed).

DC motor is still widely used in tractions due to its excellent braking properties.

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