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

  • Total Questions15

  • Time Allowed20

Start Test Download PDF

ECAT Physics Chapter 16 Alternating Current

00:00
Question # 1

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

Question # 2

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

Question # 3

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

Question # 4

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 # 5

The waveform of alternating voltage is a:

Question # 6

In free space, the speed of electromagnetic waves is

Question # 7

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

Question # 8

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

Question # 9

For the normal operation of the transistor, its

Question # 10

In n-p-n transistor, emitter base junction is kept

Question # 11

OP-AMP has the following input terminals

Question # 12

The basic circuit element in A.C. circuits are:

Question # 13

The magnitude of alternative voltage V:

Question # 14

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 # 15

During each cycle, alternating voltage reaches a peak value

Submit

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


Topic Test

00:00
Submit

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

  • S
    Sana Hashim 20 - May - 2022 00 Min 05 Sec 60/60
  • A
    Anayat Ali 26 - Mar - 2024 00 Min 06 Sec 60/60
  • H
    Heer 02 - Jan - 2024 00 Min 42 Sec 60/60
  • Q
    Qura-tul-Ain Ansari 13 - Mar - 2023 06 Min 42 Sec 60/60
  • A
    Abdullah Baloch 02 - Aug - 2024 02 Min 33 Sec 55/60
  • A
    Alishba Farooq 09 - Mar - 2024 16 Min 16 Sec 55/60
  • D
    dark goblin 19 - Jul - 2024 00 Min 39 Sec 50/60
  • S
    suzi 10 - Feb - 2026 01 Min 47 Sec 48/60
  • M
    Muhammad Rizwan 11 - Jul - 2022 02 Min 39 Sec 45/60
  • S
    Sarmad 18 - Jun - 2022 07 Min 03 Sec 45/60
  • H
    HAMZA Shah 20 - Sep - 2021 01 Min 11 Sec 40/60
  • M
    Muqadas Zahra 13 - Apr - 2022 14 Min 05 Sec 40/60
  • S
    Shaeel Fatima 24 - Feb - 2023 01 Min 10 Sec 35/60
  • T
    tehreemnadeem 11 - Jul - 2022 04 Min 13 Sec 35/60
  • M
    Muhammad Muzammil 11 - Mar - 2024 02 Min 14 Sec 30/60

ECAT Physics Chapter 16 Important MCQ's

Sr.# Question Answer
1 The device which allows only the flow of an A.C. through a circuit is
A. Capacitor
B. Inductor
C. D.C. motor
D. Battery
2 The value of output resistance of OP-AMOP is of the order of
A. few ohms
B. few hundred ohms
C. several kilo ohms
D. several mega ohms
3 For the normal operation of the transistor, its
A. emitter-base and collector base junctions are forward biased
B. emitter-base junction is reversed biased and collector base junction is forward biased
C. emitter-base junction is forward biased and collector-base junction is reverse biased
D. any one of these
4 The power factor of resonant series circuit is
A. 1
B. 0
C. -1
D. 0.5
5 The R1= infinity and R2= 0, then the gain of non-inverting amplifier is
A. zero
B. infinity
C. one
D. any one of these
6 Which one of the following is correct?
A. Vo= 1.414 Vrms
B. Iams= 1.414 Io
C. VO = 10.70 Vrms
D. Both a and b
7 The phase angle of a series RLC circuit at resonance is
A. 180°
B. 90°
C. 0°
D. None of the these
8 For normal operation of transistor, the batteries
A. VCCis of much lower value than VBB
B. VCCis of much higher value than VBB
C. VCC is equal toVBB
D. none of these
9 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
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

Test Questions

Is this page helpful?