ECAT Pre General Science Physics Chapter 16 MCQ Test With Answer

MCQ's Test For ECAT Pre General Science Physics Chapter 16 Alternating Current

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

  • Total Questions30

  • Time Allowed30

Start Test Download PDF

ECAT Pre General Science Physics Chapter 16 Alternating Current

00:00
Question # 1

OP-AMP has the following input terminals

Question # 2

The device which allows only the flow of an A.C. through a circuit is

Question # 3

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

Question # 4

Alternating current can induce voltage because it has a

Question # 5

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

Question # 6

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

Question # 7

When a transistor is used as a switch the circuit in which the current is to be switched OFF and ON, is connected between the

Question # 8

Which of the following has a great concentration of impurity

Question # 9

A changing magnetic flux creates around itself

Question # 10

SI unit of impedance is

Question # 11

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

Question # 12

The total reactance of a series RLC circuit at resonance is

Question # 13

In half wave rectification

Question # 14

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

Question # 15

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

Question # 16

Electromagnetic waves transmit energy equal to

Question # 17

The amplifier which us used to perform mathematical operations electronically is known as

Question # 18

When the emitter-base junction of a transistor is reverse biased, collector current

Question # 19

During the negative half-cycle of the half-wave rectification, the diode

Question # 20

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

Question # 21

If 250V is the RMS value of alternative voltage, then its peak value Vowill be:

Question # 22

The basic circuit elements of A.C circuit are

Question # 23

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

Question # 24

Chock consumes externally small

Question # 25

The input resistance of the OP-AMP is the resistance between the

Question # 26

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

Question # 27

The basic circuit element in D.C. circuit is:

Question # 28

In a transistor, if the central region is n-type, then this type of transistor is known as

Question # 29

The highest value reached by the voltage or current:

Question # 30

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

Submit

Prepare Complete Set Wise ECAT Pre General Science Physics Chapter 16 Alternating Current MCQs Online With Answers


Topic Test

00:00
Submit

Top Scorers Of ECAT Pre General Science Physics Chapter 16 Alternating Current MCQ`s Test

  • F
    Faiza 15 - Jan - 2024 05 Min 58 Sec 50/120
  • W
    Waleed Ahmed 25 - Feb - 2023 11 Min 06 Sec 45/120
  • O
    omama 24 - May - 2018 05 Min 38 Sec 25/120
  • H
    Hiba Akhtar 06 - Mar - 2023 03 Min 52 Sec 5/120

ECAT Physics Chapter 16 Important MCQ's

Sr.# Question Answer
1 Due to the high value of the input resistance, practically, the value of the current which flows between the input terminals is
A. zero
B. small
C. large
D. very large
2 The entire wave form of sinusoidal voltage is actually a set of all the:
A. Positive maximum value + Voand negative maximum value -Vo
B. Posiotive maximum value +Vo and zero
C. Zero and negative maximum value -Vo
D. Any of these
3 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
4 Which of the following diode is used for the detection of light
A. photo diode
B. light emitting diode
C. photo voltaic cell
D. all of them
5 The length of rotating vector (on a certain scale) represents the:
A. Peak value of alternating quantity
B. RMS value of alternating quantity
C. Instantaneous value of alternating quantity
D. Either (B) or (C)
6 A p-n junction is formed when a crystal of silicon is growth in such a way that its one half is doped with trivalent impurity and the other half with a impurity from
A. 2nd group
B. fourth group
C. fifth group
D. sixth group
7 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
8 The basic circuit element in D.C. circuit is:
A. A capacitor
B. A resistor
C. An inductor
D. Both (A) and (C)
9 An A.C varies as a function of
A. Current
B. Voltage
C. Time
D. Charge
10 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

Test Questions

Is this page helpful?