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

During the positive half-cycle in the half-wave rectification,the diode

Question # 2

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

Question # 3

Conversion of alternating current into direct current is called

Question # 4

In RLC series circuit, resonance occurs when

Question # 5

The wave form of alternating voltage is the graph between:

Question # 6

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

Question # 7

For the normal operation of the transistor, its

Question # 8

At resonance, the impedance of RLC series circuit is

Question # 9

The open loop gain of OP-AMP is of the order of

Question # 10

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

Question # 11

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

Question # 12

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

Question # 13

The waveform of alternating voltage is a:

Question # 14

Alternating current can be transmitted:

Question # 15

Which of the following diode is used to derive the current in external circuit when light is incident in the circuit

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ECAT Physics Chapter 16 Important MCQ's

Sr.# Question Answer
1 In half wave rectification
A. both halves of the input voltage is used
B. only one half of the input voltage is used
C. either of these
D. none of these
2 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
3 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
4 The time interval during which the Voltage source changes its polarity once is known as:
A. Time period T
B. Half the time period
C. Quarter the time period
D. Two third of the time period
5 If 250V is the RMS value of alternative voltage, then its peak value Vowill be:
A. 353.5V
B. 250V
C. 175V
D. zero
6 During each cycle, alternating voltage reaches a peak value
A. One time
B. Two times
C. Four times
D. A number of times depending on the frequency
7 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
8 The wave form of alternating voltage is the graph between:
A. Voltage across X-axis and time across y-axis
B. Current and time
C. Voltage along y-axis and time along x-axis
D. Voltage and current
9 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
10 The basic circuit elements of A.C circuit are
A. Resistor
B. Inductor
C. Capacitor
D. All the three

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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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