Electromagnetic Induction – Exercise – 1

1. The mechanical energy spent by the external agency is converted into electrical energy stored in the coil. This relates to :

(a) Ohm’s law
(b) Coulomb’s law
(c) Lenz’s law
(d) Newton’s law of motion

Answer
Answer : (c)
Explanation
No answer description available for this question. Let us discuss.

2. A magnetic field of induction 10 tesla acts along the axis of a coil of area 10 m2 with 20 turn. The magnetic flux linked with the coil is :

(a) 1000 turn
(b) 50 turn
(c) 500 turn
(d) 2000 turn

Answer
Answer : (b)
Explanation
No answer description available for this question. Let us discuss.

3. K is coefficient coupling between the coils. If it is less than one, then the coupling between the coils is :

(a) loose
(b) medium
(c) zero
(d) tight

Answer
Answer : (a)
Explanation
No answer description available for this question. Let us discuss.

4. The instrument that is commonly used to study wavefront is :

(a) voltmeter
(b) ammeter
(c) Bragg’s spectrometer
(d) multimeter

Answer
Answer : (d)
Explanation
No answer description available for this question. Let us discuss.

5. The angular velocity of an alternating supply having a frequency of 50 Hz.

(a) 2 rad/s
(b) 314 rad/s
(c) 1000 rad/s
(d) 20.2 rad/s

Answer
Answer : (b)

Explanation
No answer description available for this question. Let us discuss.
MORE INFORMATION
GATE Total InfoGATE 2020 BooksFree Notes
IES Total InfoIES 2020 BooksFree Mock tests
JAM Total InfoJAM 2020 BooksEngg Diploma
PSUs Total InfoM Tech Total InfoUGC NET Total Info
Copy Protected by Chetan's WP-Copyprotect.