ECAT Pre Engineering Physics Chapter 15 MCQ Test With Answer

Top Scorers Of Physics ECAT Pre Engineering Chapter 15 Electromagnetic Induction MCQ`s Test

Sr.#	Question	Answer
1	Split rings act as	A. Vibrator B. Resistor C. Motor D. Commulator
2	The SI unit of magnetic induction is	A. Weber B. Weber/meter C. Henry D. Tesla
3	Referring to above figure, due to change in current in the coil P, the change in magnetic flux	A. Is associated with coil P B. Is associated with coil S C. Causes and induced current in coil S D. All of these
4	Which of the following is most suitable as the core of transformer	A. Soft iron B. Alinco C. Steel D. None of these
5	The magnitude of induced emf depends upon the:	A. Rate of decrease of magnetic field B. Rate of change of magnetic field C. Rate of increase of magnetic flux D. Constancy of magnetic field
6	Referring to above figure, due to change in current in the coil P, the change in magnetic flux:	A. Is associated with coil P B. Is associated with coil S C. Causes an induced current is coil S D. All of these
7	Back emf is produced due to	A. Self induction B. Mutual induction C. A.C D. Lenz's law
8	The unit of induced emf is:	A. Volt B. Nm/As C. Joule coul^-1 D. Both A and C
9	Referring to above figure, current in the coil P grows from zero to its maximum value:	A. At the instant the switch is closed B. At the instant the switch is opened C. When switch is kept open D. All of above
10	Referring to above figure, a changing current in coil P can be produced:	A. At the instant the switch is closed B. At the instant the switch is opened C. With the help of rheostat D. All of these