Energy Loss Methods MCQ Questions & Answers

Energy Loss Methods MCQs : This section focuses on the "Energy Loss Methods". These Multiple Choice Questions (MCQs) should be practiced to improve the Energy Loss Methods skills required for various interviews (campus interview, walk-in interview, company interview), placement, entrance exam and other competitive examinations.

Question 1

Calculate the active power in a 32 H inductor.

A. 28 W

B. 189 W

C. 4 W

D. 0 W

Question 2

Calculate the active power in a 543 F capacitor.

A. 581 W

B. 897 W

C. 0 W

D. 892 W

Question 3

Calculate the active power in an 8764 H inductor.

A. 8645 W

B. 6485 W

C. 0 W

D. 4879 W

Question 4

Calculate the active power in an 8965 ? resistor with .23 A current flowing through it.

A. 547.12 W

B. 474.24 W

C. 554.78 W

D. 123.88 W

Question 5

Calculate the angular frequency of the waveform y(t)=69sin(40?t+4?).

A. 40? Hz

B. 60? Hz

C. 70? Hz

D. 20? Hz

Question 6

Calculate the moment of inertia of the stick about its center having a mass of 1.1 kg and length of 2.9 m.

A. .66 kgm2

B. .77 kgm2

C. .88 kgm2

D. .47 kgm2

Question 7

Calculate the moment of inertia of the stick about its end having a mass of 22 kg and length of 22 cm.

A. .088 kgm2

B. .087 kgm2

C. .089 kgm2

D. .086 kgm2

Question 8

Calculate the phase angle of the sinusoidal waveform u(t)=154sin(9.85?t-?÷89).

A. -78?÷9

B. -12?÷5

C. -?÷89

D. -2?÷888

Question 9

Calculate the useful power developed by a motor using the given data: Eb = 4V and I = 52 A. Assume frictional losses are 3 W and windage losses are 2 W.

A. 203 W

B. 247 W

C. 211 W

D. 202 W

Question 10

Calculate the value of the frequency if the capacitive reactance is .1 ? and the value of the capacitor is .02 F.

A. 71.25 Hz

B. 81.75 Hz

C. 79.61 Hz

D. 79.54 Hz

Question 11

The generated e.m.f from 22-pole armature having 75 turns driven at 78 rpm having flux per pole as 400 mWb, with lap winding is ___________

A. 76 V

B. 77 V

C. 78 V

D. 79 V

Question 12

The slope of the V-I curve is 6.9°. Calculate the value of resistance. Assume the relationship between voltage and current is a straight line.

A. .38 ?

B. .59 ?

C. .34 ?

D. .12 ?

Question 13

Which one of the following methods would give a lower than the actual value of regulation of the alternator?

A. ZPF method

B. MMF method

C. EMF method

D. ASA method

Question 14

Calculate the active power in an 8965 Ω resistor with .23 A current flowing through it.

A. 547.12 W

B. 474.24 W

C. 554.78 W

D. 123.88 W

Question 15

Calculate the angular frequency of the waveform y(t)=69sin(40πt+4π).

A. 40π Hz

B. 60π Hz

C. 70π Hz

D. 20π Hz

Question 16

Calculate the phase angle of the sinusoidal waveform u(t)=154sin(9.85πt-π÷89).

A. -78π÷9

B. -12π÷5

C. #NAME?

D. -2π÷888

Question 17

Calculate the value of the frequency if the capacitive reactance is .1 Ω and the value of the capacitor is .02 F.

A. 71.25 Hz

B. 81.75 Hz

C. 79.61 Hz

D. 79.54 Hz

Question 18

The slope of the V-I curve is 6.9°. Calculate the value of resistance. Assume the relationship between voltage and current is a straight line.

A. .38 Ω

B. .59 Ω

C. .34 Ω

D. .12 Ω