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Electric Voltage AC
for 3 phase AC supply Frequency= 50Hz, V =440 between 2 phase; then V = ? between phase and netural.
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Earthing of Lightening Arrestor
I want to know that I have a structure about 100 meter height and I have to install lightening arrestor on the top and its earthing arrangement also. And structure is also to be earthed,
so can I connect both lightening arrestor earthing and structure earthing together? or it has to be done separately? -
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Transformer Performance
What is the primary impact on the transformer performance if more than the rated KVA load is put on the transformer?
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Electrical Power Factor 0.4
If you are an electrical engineer in a factory what will you do if you found power factor 0.4?
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How does a generator generate reactive power
Does it absorb reactive power when ever it is needed ?
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VOLAGE CONTOL AND CURRENT CONTROL
What is the difference between volage control device and Current control device
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3 PHASE
A three phase motor 20hp with a power factor of 0.85 is to be fed by four single-core, PVC insulated,
copper conductor, non-armoured cables, clipped direct on a non-metallic surface in a confined space
with ambient temperature of 45oC at 40 meter run as shown in Figure Q2. Determine the suitable size
of conductor if the voltage drop from the MCB to the motor terminal must less than... -
Input Impedance of Cascade Amplifier
The input impedance of cascade amplifier will :
a. Same as input impedance of first
b. Same as output of second.
c. Same as the entire circuit
d. Same as Stage before the last stage
Electrical Engineering Interview Questions
Ans