The no load current in a transformer lags behind the applied voltage by an angle of about
A). 180°
B). 120°
C). 90°
D). 75°
1. The push-pull circuit must use ___________ operation
2. Multiple inlet system of air cooling of turbo-alternators can be used for machines of rating upto
3. Which of the following state capitals (in India) is not on broad gauge track?
4. Speed control of a universal motor is achieved by
5. The d.c. load of a transistor amplifier is generally ___________ that of a a.c. load
6. In a transformer routine efficiency depends upon
7. Thermocouples are mainly used for the measurement of
9. In a moving coil instrument, the deflecting torque is proportional to