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Indian Standard Generation
Why Indian Standard Generation voltage is 11kv?
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D.C Motor Rheostat
If the position of rheostat is changed from minimum position to maximum position in D.C shunt motors speed is increased, how?
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Transmission Line
What is Transmission Line? How it is used? Give examples.
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High Rating Motor
Why soft starter is provided for higher rating motor?
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PLC
What is PLC? Outline its working Principal.
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Series Shunt Motor
Can we recognise if motor is series or shunt by visual inspection? If yes how?
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Motor
What is the testing of h.t and l.t. motors before erection and commissioning?
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Sine Wave
Why we use sine wave in supply system rather than square and triangular wave?
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Inductive Load
How to design inductive load for 3 phase 440v and maximum 5 amps for star or delta?
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CT accuracy
How to calculate and manufacture the 5P20 class CT with require knee point volt?
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Electrical Transducer
What is the fuction of electrical current transducer, voltage transducer in control panel?
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Motor starters
When is star-delta, Dol or VFD starters used for the motor? How many times the current rating of the motor wil be drawn on a Dol starter if no OLR used?
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VFD Testing
Can you test a VFD panel with Resistive load banks? If Yes, How?
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Motor Rating
Can we use a 15kW, 1450rpm motor for 15kW, 960rpm apllication?If yes, what will be the drawbacks?
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Harmonics
How harmonics are produced in m/c what is its physical significance?
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Voltage Drop
How to calculate the voltage drop in cable?
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Current Carrying Capacity
What is the current carrying capacity of Moose conductor? What are the factors detrmine the current carrying capacity of any conductor?
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Brush Alternator
What is a brush alternator?What is a brushless alternator?What is the difference between brush and brushless alternator?Which is better between brush and brushless alternator?
Electrical Engineering Interview Questions
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