Question
Watt-hour meter measures
|
(a) Electric energy |
(b) Current |
(c) Voltage |
(d) Power |
Watt-hour meter measures
|
(a) Electric energy |
(b) Current |
(c) Voltage |
(d) Power |
(a) Electric energy
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The chemical equivalent of silver is 108. If the current in a silver voltameter is 2 Amp., the time required to deposit 27 grams of silver will be
|
(a) 8.57 hrs |
(b) 6.70 hrs |
(c) 3.35 hrs |
(d) 12.50 hrs |
Which of the following is not the property of a cathode ray
|
(a) It casts shadow |
(b) It produces heating effect |
|
(c) It produces flurosence |
(d) It does not deflect in electric field |
Comparing real and virtual images, we may say that:
In NPN transistor the collector current is 10 mA. If 90% of electrons emitted reach the collector, then
|
(a) Emitter current will be 9 mA |
(b) Emitter current will be 11.1 mA |
|
(c) Base current will be 0.1 mA |
(d) Base current will be 0.01 mA |
The temperature coefficient of resistance of a conductor is
|
(a) Positive always |
(b) Negative always |
(c) Zero |
(d) Infinite |