By increasing impurity content in the metal alloy the residual resistivity always
A). Decreases
B). Increases
C). Remains constant
D). Becomes temperature independent
1. The impurity level in an extrinsic semiconductor is about of pure semiconductor.
2. Dielectric strength ______ with increasing thickness
3. In a D.C. shunt motor, speed is
4. Synchronsizingpower of a synchronous machine is
5. The energy meter installed at a residence charges the consumer for use of:
6. When the dielectric is homogeneous,the potential gradient is
8. Three 60 W bulbs are in parallel across the 60 V power line. If one bulb burns open