ECAT Pre Engineering Physics Chapter 15 MCQ Test With Answer

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ECAT Physics Chapter 15 Important MCQ's

Sr.#	Question	Answer
1	Plan of a coil makes an angle of 20º with the lines of magnetic field. The angle between B and vector area of plane of coil is:	A. Also 20º B. 70º C. 90º D. 180º
2	Which of the following is most suitable as the core of transformer	A. Soft iron B. Alinco C. Steel D. None of these
3	Which of the following quantities remain constant in step up transformer?	A. Current B. Voltage C. Power D. Heat
4	Instead of moving the coil towards a magnet, the magnet is moved towards the coil with the same speed. The galvanometer shows current:	A. Of same magnitude in the same direction B. Of different magnitude in the same direction C. Of same magnitude but in opposite direction D. Of different magnitude in the opposite direction
5	Michael Faraday and Joseph Henry belong respectively to	A. USA and England B. England and France C. England and USA D. USA and France
6	The phenomenon of generation of induced emf is called:	A. Electrostatic induced B. Magnetic induced C. Electromagnetic induced D. Electric induced
7	The induced current is a conductor depends upon:	A. Resistance of the loop B. Speed with which the conductor moves C. Any of these D. Both (A) and (B)
8	An emf is set up in a conductor when it	A. Is kept in a magnetic field B. Is kept in an electric field C. Moves across a magnetic field D. Both A and B
9	The induced current in the loop can be increased by:	A. Using a stronger magnetic field B. Moving the loop faster C. Replacing the loop by a coil of many turns D. All above
10	A coil of constant area is placed in a constant magnetic field. An induced current is produced in the coil when:	A. The coil is distorted B. The coil is rotated C. The coil is neither distorted nor rotated D. Both A and B

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