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