1. A particular current is made up of two components: a 10 A and a sine wave of peak value 14.14 A. The average value of current is _________ A. Zero B. 24.14 A C. 10 A D. 14.14 A 2. A 38-pole, 3-phase, 80 Hz induction motor is operating at a speed of …
1. The advantage of the double squirrel cage induction motor over a single cage rotor is that it’s _______ A. Efficiency is higher B. Power factor is higher C. Slip is larger D. Starting current is lower 2. A 16-pole, 3-phase, 60 Hz induction motor is operating at a speed of 150 rpm. The …
1. The advantage of the double squirrel cage induction motor over a single cage rotor is that it’s _______ A. Efficiency is higher B. Power factor is higher C. Slip is larger D. Starting current is lower 2. A 16-pole, 3-phase, 60 Hz induction motor is operating at a speed of 150 rpm. The …
Electrical Drive Starting Method MCQ 1. The ferrite cores are used for ____________ transformers. A. Small transformers B. Medium transformers C. Large transformers D. Medium and small transformers 2. A 2-pole, 3-phase, 50 Hz induction motor is operating at a speed of 400 rpm. The frequency of the rotor current of the motor …
1. Calculate the angular frequency of the waveform y(t)=69sin(40πt+4π). A. 40π Hz B. 60π Hz C. 70π Hz D. 20π Hz 2. 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. …
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1. 440 V, 77 A, 700 rpm DC separately excited motor having a resistance of 0.11 ohms excited by an external dc voltage source of 24 V. Calculate the torque developed by the motor on full load. A. 453.51 N-m B. 451.24 N-m C. 440.45 N-m D. 452.64 N-m 2. Calculate the power developed …
1. Calculate the value of the angular acceleration of the motor using the given data: J = .01 kg-m2, load torque= 790 N-m, motor torque= 169 N-m. A. -62100 rad/s2 B. -62456 rad/s2 C. -34056 rad/s2 D. -44780 rad/s2 2. A 14-pole, 3-phase, 50 Hz induction motor is operating at a speed of 99 …
1. Calculate the value of the angular acceleration of the motor using the given data: J = .01 kg-m2, load torque= 790 N-m, motor torque= 169 N-m. A. -62100 rad/s2 B. -62456 rad/s2 C. -34056 rad/s2 D. -44780 rad/s2 2. A 14-pole, 3-phase, 50 Hz induction motor is operating at a speed of 99 …
1. Calculate the active power in a .45 H inductor. A. 0.11 W B. 0.14 W C. 0.15 W D. 0 W 2. A 10-pole, 3-phase, 60 Hz induction motor is operating at a speed of 100 rpm. The frequency of the rotor current of the motor in Hz is __________ A. 52.4 B. …
1. The ferrite cores are used for ____________ transformers. A. Small transformers B. Medium transformers C. Large transformers D. Medium and small transformers 2. A 2-pole, 3-phase, 50 Hz induction motor is operating at a speed of 400 rpm. The frequency of the rotor current of the motor in Hz is __________ A. 43.33 …
