IIT JEE Questions And Answers :: Electromagnetic Induction Electromagnetic Waves: part2



IIT JEE : Electromagnetic Induction Electromagnetic Waves QUESTIONS AND ANSWERS :: part2 : 1 to 5

Following IIT JEE Entrance Multiple choice objective type questions and answers will help you in Maths, Physics and Chemistry 2024 examinations :

1.A motor

converts electrical energy into mechanical energy
converts mechanical energy into electrical energy
converts electrical energy into magnetic energy
produces mechanical energy

2.Induction coil is based on the principle of

rheostate
self induction
mutual induction
induction

3.The core of any transformer is laminated so as to:

reduce the energy loss due to eddy currents
make it light weight
make it robust and strong
increase the secondary voltage

4.In an L-C-R circuit, capacitance is changed from C to 2C. For the resonant frequency to remain unchanged, the inductance should be changed from L to:

4L
2L
L/2
L/4

5.A choke coil is preferred to a rheostat in AC circuit, then:

it consumes almost zero power
it increases current
it increases power
it increases voltage

More Electromagnetic Induction Electromagnetic Waves QUESTIONS AND ANSWERS available in next pages

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