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 The peak value of A.C source is 20 A, then its rms value will be. 14.1 A 10 A 20 A 28.2 A
2 The most common source of an A.C. Voltage is. Motor Cell Generator Thermo couple
3 Average value of current and voltage over a complete cycle is. Positive Negative Zero Infinite
4 In Pakistan the frequency of A.C. supply is. 50 Hz 60 Hz 45 Hz 70 Hz
5 The wave form of alternating voltage is a Cotangent curve Cosine curve Sine curve Tangent curve
6 The main use of A.C is Minimum line losses Long distance transmission Stepping up to required voltage only Steeping down to required voltage only
7 The highest value reached by the voltage or current in one cycle is called. Peak ot peak value Peak value Instantaneous value Root mean square value
8 The mean value of A.C. in a cycle is. 1 0 I2 Nil
9 During each cycle A.C. voltage reaches a peak value. Once Twice Thrice Four time
10 Main reason for world wide use of A.C. is It is cheaper Transmitted Botha a and b Reaches in short time
11 The illustration of the phenomenon of mutual induction is in the device of Transformer Inductor A.C. Generator Ammeter
12 If a step up transformer were 100% efficient the primary and secondary winging's would have the same. Current Power Voltage Direction of winding
13 If D.C. input for step up transformer, the output is Zero High Low May be high or low
14 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
15 Efficiency of transformer does not affected by Input voltage Core of transformer Insulation between sheet Resistance of coils
16 A real transformer does not change. Voltage level Current level Power level Frequency
17 Eddy current is one cause energy loss in A.C. generator Transformer D.C. motor D.C. generator
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