Electric Drives Controlling Speed Using Rotor Resistance Online Exam Quiz
Electric Drives Controlling Speed Using Rotor Resistance GK Quiz. Question and Answers related to Electric Drives Controlling Speed Using Rotor Resistance. MCQ (Multiple Choice Questions with answers about Electric Drives Controlling Speed Using Rotor Resistance
Calculate the value of the angular acceleration of the motor using the given data: J = .1 kg-m2, load torque = 45 N-m, motor torque = 55 N-m.
Options
A : 100 rad/s2
B : 222 rad/s2
C : 300 rad/s2
D : 400 rad/s2
Calculate the active power in a 7481 H inductor.
Options
A : 1562 W
B : 4651 W
C : 0 W
D : 4654 W
The slope of the V-I curve is 86.5°. Calculate the value of resistance. Assume the relationship between voltage and current is a straight line.
Options
A : 16.34 ?
B : 15.88 ?
C : 48.43 ?
D : 54.57 ?
40 V, 7 A, 70 rpm DC separately excited motor having a resistance of 0.3 ohms excited by an external dc voltage source of 4 V. Calculate the torque developed by the motor on half load.
Options
A : 18.10 N-m
B : 4.24 N-m
C : 40.45 N-m
D : 52.64 N-m
Calculate the value of the time period if the frequency of the signal is .48 sec.
Options
A : 2 Hz
B : 3 Hz
C : 7 Hz
D : 9 Hz
Calculate the time period of the waveform y(t)=87cos(?t+289?÷4).
Options
A : 2 sec
B : 37 sec
C : 3 sec
D : 1 sec
Calculate the moment of inertia of the thin spherical shell having a mass of 7.8 kg and diameter of 145.6 cm.
Options
A : 2.72 kgm2
B : 5.96 kgm2
C : 5.45 kgm2
D : 2.78 kgm2
Calculate the active power developed by a motor using the given data: Eb = 5.5 V and I = .5 A.
Options
A : 2.75 W
B : 2.20 W
C : 5.30 W
D : 5.50 W
Calculate the moment of inertia of the tennis ball having a mass of 7 kg and diameter of 152 cm.
Options
A : 3.55 kgm2
B : 4.47 kgm2
C : 2.66 kgm2
D : 1.41 kgm2
Calculate the active power in .an 18.064 H inductor.
Options
A : 4.48 W
B : 17.89 W
C : 0 W
D : 25.45 W
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