In a certain three-wire Y-connected generator, the phase voltages are 2 kV. The magnitudes of the line voltages are
It is necessary for government to ___________ their people's life better
10-3 = 0.001 can be written in form of logarithm as
A pole changing type squirrel cage motor used in derricks has four, eight and twenty four poles. In this the lowest speed is used for
Liquids are generally used as insulating materials up to voltage stresses of about
If a circuit breaker does not operate on electrical compound, the probable reason could be
The insulation resistance of high voltage circuit breaker is
Which of the following circuit breakers does not use pneumatic operating mechanism
Solve the equation for x : 6x - 27 + 3x = 4 + 9 - x
There is definite objection to use of which of the following medium for extinguishing the arc in case of a circuit breaker
'Clock' is related to 'Time' in the same way as 'Vehicle' is related to which of the following
In a circuit breaker if the insulation resistance between phase terminal and earthed frame is less than the specified limit, the probable cause could be
In modem EHV circuit breakers, the operating time between instant of receiving trip signal and final contact separation is, of the order of
The normal frequency rms voltage that appears across the breaker poles after final arc extinction has occurred, is