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 basic circuit elements of A.C circuit are

Question # 2

When the pn-junction is connected reversed biased, its resistance is of the order of

Question # 3

At higher frequency of the alternating current, the capacitive reactance Xc

Question # 4

A diode characteristic curve is a plot between

Question # 5

An A.C. voltage is applied across the inductor. When the frequency of the voltage is increased, the current

Question # 6

In a normally biased n-p-n transistor, an electron c current IEflows from the

Question # 7

Unless stated otherwise, when we speak of A.C. meter reading, we usualy mean:

Question # 8

If we connect a A.C. volt meter to read A.C. voltage, It would read its:

Question # 9

In a transistor, the central region is called

Question # 10

Alternating current can induce voltage because it has a

Question # 11

The emitter-base junction of a transistor is forward-biased and collector-base junction is reverse-biased. If the base current is increased, its

Question # 12

Electromagnetic waves transmit energy equal to

Question # 13

In half wave rectification

Question # 14

The value of the input resistance of OP-AMP is of the order of

Question # 15

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

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ECAT Physics Chapter 16 Important MCQ's

Sr.# Question Answer
1 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
2 At resonance, the phase angle for RLC series resonance circuit equals
A. 0°
B. 90°
C. 180°
D. 270°
3 When the pn-junction is connected reversed biased, its resistance is of the order of
A. few ohms
B. few kilo-ohms
C. few mega-ohms
D. few mili-ohms
4 The output voltage of half wave rectification is in the form of
A. a smooth curve
B. a smooth wave
C. pulses
D. all of the above
5 Alternating current can be transmitted:
A. To long distance
B. At very high cost
C. At very low cost
D. Both (A) and (C)
6 Transmitting antenna emits
A. Magnetic waves
B. Electric waves
C. Electromagnetic waves
D. Sound waves
7 In a transistor, if the central region is n-type, then this type of transistor is known as
A. n-p-n transistor
B. p-n-p transistor
C. either of these
D. none of these
8 The Instantaneous value of alternative current maybe:
A. The same as its RMS value
B. Greater than its Rms value
C. The same as its peak value
D. Any of these
9 In a normally biased n-p-n transistor, an electron c current IEflows from the
A. emitter into the base
B. collector into the base
C. base into collector
D. none of these
10 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

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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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