ECAT Pre Computer Science Chapter 16 MCQ Test With Answer

MCQ's Test For ECAT Physics Chapter 16 Alternating Current

Try The MCQ's Test For ECAT Physics Chapter 16 Alternating Current

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ECAT Physics Chapter 16 Alternating Current

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Question # 1

A changing magnetic flux creates around itself

Question # 2

Due to the high value of the input resistance, practically, the value of the current which flows between the input terminals is

Question # 3

In which of the following diodes when an electron combines with a hole during the forward biasing, photon of visible light is emitted.

Question # 4

For normal operation of transistor, the batteries

Question # 5

If the value of C in a series RLC circuit is increased, the resonant frequency

Question # 6

When either L or C is increased, the resonant frequency of the RLC series circuit

Question # 7

A digital system deals with quantities or variables which have

Question # 8

The sum of positive and negative peak values is called:

Question # 9

The entire wave form of sinusoidal voltage is actually a set of all the:

Question # 10

When the p-n junction is forward biased its resistance is of the order of

Question # 11

A resonance curve for RLC series circuit is a plot of frequency versus

Question # 12

In series RC circuit when R=Xc, then the phase angle is

Question # 13

The highest value reached by the voltage or current:

Question # 14

The power factor of resonant series circuit is

Question # 15

The magnitude of alternative voltage V:

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ECAT Physics Chapter 16 Important MCQ's

Sr.# Question Answer
1 The basic circuit element in A.C. circuits are:
A. Resistor and capacitor
B. Resistor and Inductor
C. Capacitor only
D. Both (B) and (C)
2 If we connect a A.C. volt meter to read A.C. voltage, It would read its:
A. RMS value
B. Instantaneous value
C. Valued average over a cycle
D. Zero
3 Nowadays, Most of the electric energy is produced by the A.C. generators using:
A. Hydal water
B. Geothermal energy
C. Solar energy
D. Biomass
4 Most OP-AMP operates with
A. + 6 V supply
B. + 10 V supply
C. + 12 V supply
D. + 24 V supply
5 Which of the following has a great concentration of impurity
A. base
B. emitter
C. collector
D. none of these
6 A signal appears after amplification, at the output terminal with a phase shift of 180° , if it is applied at
A. inverting input
B. non-inverting input
C. any one of the input terminal
D. none of them
7 For normal operation of transistor, the batteries
A. VCCis of much lower value than VBB
B. VCCis of much higher value than VBB
C. VCC is equal toVBB
D. none of these
8 Which of the following diodes can operate in the reverse biased condition
A. photo diode
B. light emitting diode
C. photo voltaic cell
D. none of these
9 The magnitude of alternative voltage V:
A. Always increase
B. Always decrease
C. Remains constant
D. Does not remain constant
10 The R1= infinity and R2= 0, then the gain of non-inverting amplifier is
A. zero
B. infinity
C. one
D. any one of these

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