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

At resonance, the phase angle for RLC series resonance circuit equals

Question # 2

A P-N juction or semiconductor diode cannot be used as

Question # 3

In describing functions of digital systems, a closed switch will be shown as

Question # 4

The power factor of resonant series circuit is

Question # 5

In RLC series circuit, resonance occurs when

Question # 6

The time interval during which the Voltage source changes its polarity once is known as:

Question # 7

The alternative voltage of current is actually measured by:

Question # 8

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

Question # 9

Alternating current can be transmitted:

Question # 10

The value of the potential difference across the depletion region for the case of germanium is

Question # 11

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

Question # 12

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

Question # 13

Which of the following diode is used for the detection of light

Question # 14

In an A.C circuit with resistor only, the current and voltage have a phase angle of

Question # 15

The closed loop gain of the non-inverting amplifier is given by

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ECAT Physics Chapter 16 Important MCQ's

Sr.# Question Answer
1 In an A.C circuit with resistor only, the current and voltage have a phase angle of
A. 90°
B. 0°
C. 180°
D. none of these
2 The RMS value of alternating current is:
A. 0.7 times at the peak value
B. 0.5 times the peak value
C. 0.7 times the Instantaneous value
D. Equal to maximum voltage
3 The alternative voltage of current is actually measured by:
A. Its RMS value
B. Square root of its mean square value
C. Instantaneous value
D. Peak value
4 A diode characteristic curve is a plot between
A. current and time
B. voltage and time
C. voltage and current
D. forward voltage and reversed voltage
5 In which of the following diodes when an electron combines with a hole during the forward biasing, photon of visible light is emitted.
A. photo diode
B. light emitting diode
C. photo voltaic cell
D. all of them
6 The highest value reached by the voltage or current:
A. In quarter cycle is called Instantaneous value
B. In half cycle is called peak-to-peak value
C. In one cycle is called peak value
D. In half cycle is called Instantaneous value
7 Unless stated otherwise, when we speak of A.C. meter reading, we usualy mean:
A. Peak value
B. RMS value
C. Instantaneous value
D. Peak-to-peak value
8 Mathematical manipulation of the two quantized states can be best carried if they are represented by
A. high - low
B. yes - no
C. on - off
D. 0 - 1
9 A resonance curve for RLC series circuit is a plot of frequency versus
A. Voltage
B. Current
C. Impedance
D. Reactance
10 The waveform of alternating voltage is a:
A. Square
B. Rectangular
C. Saw-tooth
D. Sinusoidal

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  • Iiqra Fatima

    Iiqra Fatima

    25 May 2018

    You should let us practice difficult mcqs ..These are too easy for ECAT level....Thanku

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