Related Questions

The distribution mains are designed for
A Maximum daily demand
B Maximum hourly demand
C Average daily demand
D Maximum hourly demand on maximum day
In pressure supply mains, water hammer pressure is reduced by providing
A Sluice valves
B Air valves
C Pressure relief valves
D None of these
According to National Building Code, the hydrants in water mains is provided at minimum interval of
A 50 m
B 60 m
C 75 m
D 90 m
The output power of a transistor amplifier is more than the input power because the additional power is supplied by ___________
A Transistor
B Biasing circuit
C Collector supply VCC
D None of the above
Power electronics essentially deals with control of a.c. power at ___________.
A Frequencies above 20 kHz
B Frequencies above 1000 kHz
C Frequencies less than 10 Hz
D 50 Hz frequency
A power supply which has voltage regulation of ___________ is unregulated power supply
A 0%
B 5%
C 10%
D 8%
Of the 65 cars on a car lot, 45 have air conditioning, 30 have power windows, and 12 have both air conditioning and power windows. how many of the cars on the lot have neither air conditioning nor power windows?
A 2
B 8
C 12
D 18
The power factor indicates how much of the apparent power is reactive power.
A True
B False
The power factor (PF) indicates how much of the apparent power is true power.
A True
B False
A synchronous motor installed at the receiving end substation operates with such an excitation that it takes power at lagging power factor. Now if the applied voltage of the synchronous motor goes down, the power factor of the synchronous motor will
A remain same
B go down
C improve
D none of the above

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