D.C. machines designed with a large value of air gap length have
A). worst, ventilation
B). better ventilation
C). better ventilation
D). none of the above
1. When the demand of consumers is not met by a power plant, it will resort to which of the following ?
2. Ryall crest voltmeter is used for measurement of
3. At series resonance, the inductive reactance and capacitive reactance are never equal.
4. In selenium rectifiers efficiencies ranging from ______ to ______ percent are attainable
5. The construction of a synchronous motor resembles
7. Which of the following amplifier is used in a digital to analog converter?
8. If ground is applied to the (+) terminal of an inverting OP-amp, the (–) terminal will
9. Underfeed stokers work best for __________ coals high in volatile matter and with caking tendency
10. The purpose of stator winding in the compensated repulsion motor is to