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

The alternative voltage of current is actually measured by:

Question # 2

The phase angle of a series RLC circuit at resonance is

Question # 3

The R1= infinity and R2= 0, then the gain of non-inverting amplifier is

Question # 4

The phase at the positive peak of an A.C. cycle is:

Question # 5

If we connected the ordinary DC ammeter to measure alternating current, it would measure its:

Question # 6

The bridge circuit of full wave rectification uses

Question # 7

In half wave rectification

Question # 8

A diode characteristic curve is a plot between

Question # 9

Conversion of alternating current into direct current is called

Question # 10

For a n-p-n transistor, the conventional current equation can be written as

Question # 11

The sum of positive and negative peak values is called:

Question # 12

When electrons in the transmitting antenna vibrate 94000 time per second, they produce radiowaves having frequency

Question # 13

Mathematical manipulation of the two quantized states can be best carried if they are represented by

Question # 14

The power factor of resonant series circuit is

Question # 15

A digital system deals with quantities or variables which have

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ECAT Physics Chapter 16 Important MCQ's

Sr.# Question Answer
1 In which of the following components, pn-junction is used
A. light emitting diode
B. photo diode
C. photo voltaic cell
D. all of these
2 The sum of positive and negative peak values is called:
A. Instantaneous value
B. Peak value
C. Rms valuie
D. Peak-to peak-value
3 The input resistance of the OP-AMP is the resistance between the
A. (-) input and output
B. (+) input and output
C. (-) and (+) inputs
D. between any inputs
4 In a transistor, if the central region is p-type then this type of transistor is known as
A. p-n-p transistor
B. n-p-n transistor
C. either of these
D. none of these
5 At resonance frequency the impedance of parallel resonance circuit is
A. Maximum
B. Minimum
C. Zero
D. None of the above
6 The basic circuit element in D.C. circuit is:
A. A capacitor
B. A resistor
C. An inductor
D. Both (A) and (C)
7 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
8 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)
9 The total reactance of a series RLC circuit at resonance is
A. zero
B. Equal to the resistance
C. Infinity
D. Capacitive
10 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

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