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Free gk questions Online Test - MeritNotes

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1. The potential difference in electric circuit is

(a)
220 V
(b)
230 V
(c)
240 V
(d)
250 V

2. Which is not a refractory material to prevent oxidation?

(a)
Porcelain
(b)
Carbon
(c)
Fire clay
(d)
Asbestos

3. The article to be electroplated is placed at

(a)
Anode
(b)
Cathode
(c)
Cathode or anode
(d)
Electrolyte

4. Heat developed in a conductor is

(a)
Directly proportional to the square of current
(b)
Directly proportional to the cubic value of current
(c)
Inversely proportional to the current
(d)
Directly proportional to the current

5. Slip rings are placed in a

(a)
Transformer
(b)
Galvanometer
(c)
AC generator
(d)
DC generator

6. Mechanical energy is converted into electrical energy in a

(a)
Loud speaker
(b)
Motor
(c)
Generator
(d)
Microphone

7. ___ found Ohm’s law.

(a)
George
(b)
Volta
(c)
Ampere
(d)
Simon ohm

8. The life of an electric lamp is

(a)
1 H.P.
(b)
746 watts
(c)
1.5 H.P.
(d)
1.341 H.P.

9. The magnetic effects of electric current was discovered by

(a)
Ampere
(b)
Oersted
(c)
Faraday
(d)
Maxwell

10. The unit of work is equal to

(a)
kg m
(b)
Joule metre
(c)
Joule
(d)
Newton

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