ECAT Pre Engineering Physics Chapter 16 MCQ Test With Answer

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

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

  • Total Questions15

  • Time Allowed20

Start Test Download PDF

Physics ECAT Pre Engineering Chapter 16 Alternating Current

00:00
Question # 1

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

Question # 2

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

Question # 3

Alternating current can induce voltage because it has a

Question # 4

The Instantaneous value of alternative current maybe:

Question # 5

The output voltage of half wave rectification is in the form of

Question # 6

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

Question # 7

In a transistor, the central region is called

Question # 8

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

Question # 9

An A.C. voltmeter read 250 volts. The frequency of alternating is 50 Hz, the peak value of voltage is

Question # 10

Which of the following diodes can operate in the reverse biased condition

Question # 11

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

Question # 12

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

Question # 13

SI unit of impedance is

Question # 14

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

Question # 15

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

Submit

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


Topic Test

00:00
Submit

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

  • F
    Farzand Shah Farzand Shah 01 - Jun - 2024 00 Min 49 Sec 60/60
  • F
    Faisal Mehar 24 - May - 2024 01 Min 22 Sec 60/60
  • B
    Bilal Javed 10 - Mar - 2024 02 Min 10 Sec 60/60
  • H
    Huzaifa Asim 25 - May - 2024 04 Min 21 Sec 60/60
  • U
    uzma majeed 12 - Mar - 2024 03 Min 28 Sec 55/60
  • V
    Viral Edits 29 - May - 2024 04 Min 41 Sec 50/60
  • M
    Muhammad Sufyan 01 - Jun - 2024 00 Min 08 Sec 45/60
  • H
    Hamza Mughal 21 - Mar - 2024 02 Min 02 Sec 45/60
  • A
    Abdullah Zubair 07 - Jan - 2025 02 Min 53 Sec 45/60
  • K
    Kazim Ali 15 - May - 2024 03 Min 10 Sec 45/60
  • M
    Mateen Jadoon 10 - Aug - 2024 04 Min 07 Sec 45/60
  • M
    Munir Ahmad 15 - May - 2024 04 Min 42 Sec 45/60
  • U
    Umaima Saeed 29 - May - 2024 06 Min 32 Sec 45/60
  • A
    Ayra Arshad 06 - Jul - 2024 01 Min 58 Sec 35/60
  • B
    Barira Fatima 26 - May - 2024 03 Min 55 Sec 35/60

ECAT Physics Chapter 16 Important MCQ's

Sr.# Question Answer
1 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
2 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
3 When the emitter-base junction of a transistor is reverse biased, collector current
A. Reverses
B. Increases
C. Decreases
D. Stops
4 The RMS value of alternating current is:
A. 0.7 times at the peak value
B. 0.5 times the peak value
C. 0.7 times the Instantaneous value
D. Equal to maximum voltage
5 When the p-n junction is forward biased its resistance is of the order of
A. few mega ohms
B. few kilo ohms
C. few ohms
D. few milli ohms
6 In series RC circuit when R=Xc, then the phase angle is
A. 0°
B. 90°
C. 70°
D. 45°
7 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
8 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
9 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
10 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

Test Questions

Share your comments & questions here

Guest

  • No comments yet. Be the first to comment!