Physics FSC Part 2 Online MCQ's Test With Answers

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Physics FSC Part 2 Online MCQ's Test

Sr. # Questions Answers Choice
1 If the coil is wound on iron core, the flux through it. Decreases Becomes zero Increases Remains constant
2 The only difference between the construction of D.C and A.C is. Carbon burshes Coil Commutator Magnetic field
3 A simple device that prevents the direction of current from changing is called. Commutator Rotor Armature Detector
4 In D.C. generator, split rings act as. Capacitor Commutator Resistor Inductor
5 Commentator was invented by Henry Ousted Maxwell William sturgeon
6 In A.C. generator , when plane of coil is perpendicular to magnetic field, then output of generator is. NwAB 2pi f Maximum Zero
7 In A.C. inductor behaves as Capacitor Resistor Commutator Transistor
8 Induced emf in A.C. generator can be increased by Decreasing area of coil Decreasing magnetic field Increasing area of coil Slowing down speed of coil
9 If speed of rotation of a generator is doubled the output voltage will be. Remain same Double Four time One half
10 Which one is not present in A.C. generator. Armature Magnet Slip rings Commutator
11 A.C. Generator based upon the Lenz's law Maxwell's relation Faradays law of electromagnet induction Mutual induction
12 A 50 mH coil carries a current of 2.0 a , then energy stored in tis magnetic field is. 0.1 J 10 J 100 J 1000 J
13 If 10 A current passes through 100 mH inductor, then energy stored is. 100 J 5 J 20 J Zero
14 In case of inductor , energy is stored in the Electric field Magnetic field Potential field Gravitational field
15 If magnetic field is doubled then magnetic energy density becomes. Four times Two times Three times Six times
16 Energy stored in inductor is. 1/2 L I<sup>2</sup> 1/2 LI 1/2 L2I 1/2 L2I2
17 B2/2p is the expression of. Lenz's law Magnetic energy Magnetic energy density Back emf
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