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 Main reason for world wide use of A.C. is It is cheaper Transmitted Botha a and b Reaches in short time
2 The illustration of the phenomenon of mutual induction is in the device of Transformer Inductor A.C. Generator Ammeter
3 If a step up transformer were 100% efficient the primary and secondary winging's would have the same. Current Power Voltage Direction of winding
4 If D.C. input for step up transformer, the output is Zero High Low May be high or low
5 A step up transformer is used 120 V line to provide 240 V. If primary coil has 100 turns the number of turns is secondary is. 50 100 150 200
6 Efficiency of transformer does not affected by Input voltage Core of transformer Insulation between sheet Resistance of coils
7 A real transformer does not change. Voltage level Current level Power level Frequency
8 Eddy current is one cause energy loss in A.C. generator Transformer D.C. motor D.C. generator
9 For step down transformer Ns>Np Np > Ns Ns = Np Ns > > > Np
10 Step up transformer is used. Step up D.C. voltage Step up A.C. voltage Step up both A.C and D.C. Step up A.C. current
11 Transformer is used to change Electric power Magnetic field Alternating voltage Phase of A.C.
12 The application of mutual induction is a. D.C. motor Radio Television Transformer
13 the core of transformer is laminated so reduce. Magnetic loss Hysteresis loss Eddy current loss Electric loss
14 The working principle of transformer is. Self induction Faraday's law Mutual induction Electromagnetic induction
15 When back emf in motor is zero, it draws. Zero current Minimum current Maximum current Steady current
16 When motor is just started, back emf is almost. Maximum Zero Minimum Infinite
17 With the speed of motor, magnitude of back emf Remain same Increase Decrease First increases then decreases
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