Varistors are______________?

Related Mcqs:

1.  If P is the power of a star connected system then what will be power of an equivalent delta connected system?

   A. P
   B. 3P
   C. P/3
   D. None of the above

   Updated by: muhammad rahim

2. Internal resistance of ideal voltage source is ?

   A. zero
   B. infinite
   C. finite
   D. 100 ohms

3. Conductance is reciprocal of____________?

   A. resistance
   B. inductance
   C. reluctance
   D. capacitance

4. You have to replace 1500 Q resistor in radio. You have no 1500 Q resistor but have several 1000 Q ones which you would connect__________?

   A. two in parallel
   B. two in parallel and one in series
   C. three in parallel
   D. three in series

5. For which of the following ‘ampere second’ could be the unit ?

   A. Reluctance
   B. Charge
   C. Power
   D. Energy

6. Which of the following statement is true________________?

   A. A galvanometer with low resistance in parallel is a voltmeter
   B. A galvanometer with high resistance in parallel is a voltmeter
   C. A galvanometer with low resistance in series is an ammeter
   D. A galvanometer with high resistance in series is an ammeter

7. Two resistances Rl and Ri are connected in series across the voltage source where Rl>Ri. The largest drop will be across______________?

   A. Rl
   B. Ri
   C. either Rl or Ri
   D. none of them

8. Two bulbs of 500 W and 200 W rated at 250 V will have resistance ratio as________?

   A. 4 : 25
   B. 25 : 4
   C. 2 : 5
   D. 5 : 2

9. When resistance element of a heater fuses and then we reconnect it after removing a portion of it, the power of the heater will___________?

   A. decrease
   B. increase
   C. remain constant
   D. none of the above

10. The ratio of mass of proton to that of electron is nearly_____________?

    A. 1840
    B. 1840
    C. 30
    D. 4