Armature-Terminal Voltage MCQs : This section focuses on the "Armature-Terminal Voltage". These Multiple Choice Questions (MCQs) should be practiced to improve the Armature-Terminal Voltage 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 17 ? resistor with 18 A current flowing through it.
A. 5508 W
B. 5104 W
C. 5554 W
D. 5558 W
Question 2
Calculate the active power in a 181 H inductor.
A. 2448 W
B. 1789 W
C. 4879 W
D. 0 W
Question 3
Calculate the active power in a 457 F capacitor.
A. 715 W
B. 565 W
C. 545 W
D. 0 W
Question 4
Calculate the active power in a 7481 H inductor.
A. 1562 W
B. 4651 W
C. 0 W
D. 4654 W
Question 5
Calculate the frequency of the waveform x(t)=45sin(40?t+5?).
A. 24 Hz
B. 27 Hz
C. 23 Hz
D. 20 Hz
Question 6
Calculate the moment of inertia of the rod about its center having a mass of 11 kg and length of 29 cm.
A. .091 kgm2
B. .072 kgm2
C. .076 kgm2
D. .077 kgm2
Question 7
Calculate the moment of inertia of the rod about its end having a mass of 39 kg and length of 88 cm.
A. 9.91 kgm2
B. 9.92 kgm2
C. 9.96 kgm2
D. 9.97 kgm2
Question 8
Calculate the phase angle of the sinusoidal waveform x(t)=42sin(4700?t+2?÷3).
A. 2?÷9
B. 2?÷5
C. 2?÷7
D. 2?÷3
Question 9
Calculate the shaft power developed by a motor using the given data: Eb = 404V and I = 25 A. Assume frictional losses are 444 W and windage losses are 777 W.
A. 8879 W
B. 2177 W
C. 8911 W
D. 8897 W
Question 10
Calculate the value of the frequency if the capacitive reactance is 13 ? and the value of the capacitor is 71 F.
A. .0001725 Hz
B. .0001825 Hz
C. .0001975 Hz
D. .0001679 Hz
Question 11
The generated e.m.f from 16-pole armature having 57 turns driven at 78 rev/sec having flux per pole as 5 mWb, with lap winding is ___________
A. 44.16 V
B. 44.15 V
C. 44.46 V
D. 44.49 V
Question 12
The slope of the V-I curve is 27°. Calculate the value of resistance. Assume the relationship between voltage and current is a straight line.
A. .384 ?
B. .509 ?
C. .354 ?
D. .343 ?
Question 13
Calculate the active power in a 17 ω resistor with 18 A current flowing through it.
A. 5508 W
B. 5104 W
C. 5554 W
D. 5558 W
Question 14
Calculate the frequency of the waveform x(t)=45sin(40πt+5π).
A. 24 Hz
B. 27 Hz
C. 23 Hz
D. 20 Hz
Question 15
Calculate the phase angle of the sinusoidal waveform x(t)=42sin(4700πt+2π÷3).
A. 2π÷9
B. 2π÷5
C. 2π÷7
D. 2π÷3
Question 16
Calculate the value of the frequency if the capacitive reactance is 13 Ω and the value of the capacitor is 71 F.
A. .0001725 Hz
B. .0001825 Hz
C. .0001975 Hz
D. .0001679 Hz
Question 17
The slope of the V-I curve is 27°. Calculate the value of resistance. Assume the relationship between voltage and current is a straight line.
A. .384 Ω
B. .509 Ω
C. .354 Ω
D. .343 Ω