ECAT Pre Engineering Physics Chapter 15 MCQ Test With Answer

MCQ's Test For Physics ECAT Pre Engineering Chapter 15 Electromagnetic Induction

Try The MCQ's Test For Physics ECAT Pre Engineering Chapter 15 Electromagnetic Induction

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Physics ECAT Pre Engineering Chapter 15 Electromagnetic Induction

00:00
Question # 1

Split rings act as

Question # 2

Self inducede e.m.f. is also called

Question # 3

Michael Faraday and Joseph Henry belong respectively to

Question # 4

For inducting emf in a coil the basic requirement is that:

Question # 5

The device in which induced emf is statically induced emf is:

Question # 6

The Phenomenon of generation of induced emf is called

Question # 7

Step up transformer has a transformation ratio of 3:2. What is the voltage in secondary, if voltage in primary is 30V:

Question # 8

The change of magnetic flux through a circuit will produce

Question # 9

The induced current in the loop can be increased by:

Question # 10

Eddy current is produced when:

Question # 11

The ratio of average e.m.f in the coil tot he time rate of change of current in the same coil is called

Question # 12

Referring to above figure, due to change in current in the coil P, the change in magnetic flux

Question # 13

The magnitude of induced emf depends upon the:

Question # 14

Referring to above figure, a changing current in coil P can be produced:

Question # 15

The induced emf in a coil is proportional to:

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ECAT Physics Chapter 15 Important MCQ's

Sr.# Question Answer
1 The change of magnetic flux through a circuit will produce
A. Magnetic Field
B. Electric Field
C. emf
D. a.c
2 Lens's law deals with the
A. Magnitude of induced current
B. Magnitude of induced e.m.f
C. Direction of induced e.m.f
D. Direction of induced current
3 Referring to above figure, current in coil P falls from its maximum value to zero:
A. At the instant the switch is closed
B. At the instant the switch is opened
C. When switch is kept open
D. When switch is kept closed
4 The work is stored in the inductor as
A. Electric potential energy
B. Elastic potential energy
C. Magnetic energy
D. Absolute potential energy
5 Which of the following is most suitable as the core of transformer
A. Soft iron
B. Alinco
C. Steel
D. None of these
6 Back emf is produced due to
A. Self induction
B. Mutual induction
C. A.C
D. Lenz's law
7 A metal road of length 1m is moving at a speed of 1 ms-1In a direction making angle of 30º with 0.5 Y magnetic field. The emf produced in the rod is:
A. 0.25 N
B. 0.25 V
C. 2.5 V
D. 2.5 N
8 The Phenomenon of generation of induced emf is called
A. Electrostatic induction
B. Magnetic induction
C. Electromagnetic induction
D. Electric induction
9 In magnet-coil experiment, emf can be produced by
A. Keeping the coil stationary and moving the magnet
B. Keeping the magnet stationary and moving
C. Relative motion of the loop and magnet
D. Any one of above
10 In the equilibrium state, the potential difference between two ends of the conductor moving across a magnetic field is called:
A. Both A and C
B. Induced emf
C. Both A and B
D. Motion emf

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