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

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

Question # 2

In which of the following diodes when an electron combines with a hole during the forward biasing, photon of visible light is emitted.

Question # 3

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 # 4

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

Question # 5

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

Question # 6

The sum of positive and negative peak values is called:

Question # 7

To design a resonant circuit of frequency 100 KHz with an inductor of inductance 5 mH, we need a capacitor of capacitance

Question # 8

Chock consumes externally small

Question # 9

Average value of A.C voltage during one cycle is

Question # 10

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

Question # 11

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

Question # 12

Transmitting antenna emits

Question # 13

The R1= infinity and R2= 0, then the gain of non-inverting amplifier is

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

In frequency modulation (FM), the carrier waves amplitude

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
  • M
    Muneeb ur Rehman 29 - Jun - 2026 01 Min 47 Sec 56/60
  • 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

ECAT Physics Chapter 16 Important MCQ's

Sr.# Question Answer
1 In describing functions of digital systems, a closed switch will be shown as
A. 0
B. 1
C. low
D. any one 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 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
4 Most OP-AMP operates with
A. + 6 V supply
B. + 10 V supply
C. + 12 V supply
D. + 24 V supply
5 Chock consumes externally small
A. Charge
B. Current
C. Power
D. Potential
6 The sum of positive and negative peak values is called:
A. Instantaneous value
B. Peak value
C. Rms valuie
D. Peak-to peak-value
7 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
8 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
9 When the pn-junction is in reversed biased, current flows through the junction due to the
A. majority carriers
B. minority carriers
C. either of them
D. none of them
10 During the positive half-cycle in the half-wave rectification,the diode
A. does not conduct
B. conducts
C. either of these
D. neither of these

Test Questions

Share your comments & questions here

Guest
  • Iiqra Fatima

    Iiqra Fatima

    25 May 2018

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

    Like
    Reply