The maximum speed variation in a 3-phase synchronous motor is
A). 10 per cent
B). 6 per cent
C). 4 per cent
D). 2. per cent
E). zero
The percentage slip in case of a synchronous motor is
A). 1%
B). 100%
C). 0.5%
D). zero
Which of the following statements pertains to resistors only?
A). Can dissipate considerable amount of power
B). Can act as energy storage devices
C). Connecting them in parallel increases the total value
D). Oppose sudden changes in voltage
The power consumed in a circuit element will be least when the phase difference between the current and voltage is
A). 180°
B). 90°
C). 60°
D). 0°
Capacitors for power factor correction are rated in
A). kW
B). kVA
C). kV
D). kVAR