Minimum voltage regulation occurs when the power factor of the load is
A). unity
B). lagging
C). leading
D). zero
1. In an induction motor if air-gap is increased
2. When the transistor (CE arrangement) is in the cut off region, the collector current is ___________.
3. Main traction systems used in India are, those using
5. Synchronous motors are generally not self-starting because
6. Eddy currents are induced in the pole shoes of a D.C. machine due to
7. In case of ___________ free running and coasting periods are generally long.
10. Which of the following property is not necessarily desirable in the material for transformer core?