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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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Total Questions15
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Time Allowed20
ECAT Physics Chapter 16 Alternating Current
00:00
Question # 1
Most OP-AMP operates with
Question # 2
In series RC circuit when R=Xc, then the phase angle is
Question # 3
In a transistor, the central region is called
Question # 4
At resonance frequency the impedance of parallel resonance circuit is
Question # 5
Which of the following has a great concentration of impurity
Question # 6
The input resistance of the OP-AMP is the resistance between the
Question # 7
The device which allows only the flow of an A.C. through a circuit is
Question # 8
Which one of the following Electro-magnetic wave have the highest frequency and shortest wave-length
Question # 9
Alternating current can be transmitted:
Question # 10
During the positive half-cycle in the half-wave rectification,the diode
Question # 11
The magnitude of alternative voltage V:
Question # 12
During the negative half-cycle of the half-wave rectification, the diode
Question # 13
In free space, the speed of electromagnetic waves is
Question # 14
An A.C. voltage is applied across the inductor. When the frequency of the voltage is increased, the current
Question # 15
A sinusoidally alternating voltage or current can be graphically represented by a:
Top Scorers Of ECAT Physics Chapter 16 Alternating Current MCQ`s Test
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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 | In frequency modulation (FM), the carrier waves amplitude |
A. Remains constant
B. Increase
C. Decreases
D. None of these
|
| 2 | A digital system deals with quantities or variables which have |
A. only one state
B. only two discrete states
C. three discrete states
D. four discrete states
|
| 3 | A sinusoidally alternating voltage or current can be graphically represented by a: |
A. Vector
B. Rotating vector
C. Clockwise vector
D. Anticlockwise voltage vector
|
| 4 | At resonance, the impedance of RLC series circuit is |
A. Maximum
B. Zero
C. Minimum
D. Determinate
|
| 5 | A P-N juction or semiconductor diode cannot be used as |
A. A rectifier
B. Detector
C. Oscillator
D. An amplifier
|
| 6 | In a transistor, the central region is called |
A. collector
B. emitter
C. base
D. none of them
|
| 7 | In describing functions of digital systems, a closed switch will be shown as |
A. 0
B. 1
C. low
D. any one of these
|
| 8 | During the negative half-cycle of the half-wave rectification, the diode |
A. does not conduct
B. conducts
C. either of these
D. none of these
|
| 9 | The magnitude of alternative voltage V: |
A. Always increase
B. Always decrease
C. Remains constant
D. Does not remain constant
|
| 10 | The r.m.s. value of alternating current is equal to its maximum value at angle of |
A. 60°
B. 45°
C. 30°
D. 90°
|
Test Questions
Share your comments & questions here
Iiqra Fatima
25 May 2018You should let us practice difficult mcqs ..These are too easy for ECAT level....Thanku