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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
The waveform of alternating voltage is a:
Question # 2
The RMS value of alternating current is:
Question # 3
The phase angle of a series RLC circuit at resonance is
Question # 4
The sum of positive and negative peak values is called:
Question # 5
When the pn-junction is in reversed biased, current flows through the junction due to the
Question # 6
The time interval during which the Voltage source changes its polarity once is known as:
Question # 7
In n-p-n transistor, emitter base junction is kept
Question # 8
The open loop gain of OP-AMP is of the order of
Question # 9
For the normal operation of the transistor, its
Question # 10
The impedance of RLC series resonance circuit at resonant frequency is
Question # 11
In a transistor, if the central region is p-type then this type of transistor is known as
Question # 12
In an A.C circuit with resistor only, the current and voltage have a phase angle of
Question # 13
During the positive half-cycle in the half-wave rectification,the diode
Question # 14
At resonance, the impedance of RLC series circuit is
Question # 15
The basic circuit elements of A.C circuit are
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 | 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
|
| 2 | SI unit of impedance is |
A. hertz
B. henry
C. ampere
D. ohms
|
| 3 |
Peak value of alternative current is: |
A. one of its Instantaneous value
B. Equal to its RMS value
C. The same as its peak-to-peak value
D. Both (B) and (C)
|
| 4 | The open loop gain of OP-AMP is of the order of |
A. 102
B. 103
C. 104
D. 105
|
| 5 | The power factor of resonant series circuit is |
A. 1
B. 0
C. -1
D. 0.5
|
| 6 | Conversion of alternating current into direct current is called |
A. amplification
B. rectification
C. conduction
D. polarization
|
| 7 | At resonance frequency the impedance of parallel resonance circuit is |
A. Maximum
B. Minimum
C. Zero
D. None of the above
|
| 8 | Alternating current is produced by a voltage source which polarity: |
A. Remains the same
B. Reverse after period T
C. Keeps on reversing with time
D. Reverse after every time interval T/2
|
| 9 | Electromagnetic waves transmit energy equal to |
A. 1/2 mv2
B. moc2
C. hf/c
D. hf
|
| 10 | When the pn-junction is connected reversed biased, its resistance is of the order of |
A. few ohms
B. few kilo-ohms
C. few mega-ohms
D. few mili-ohms
|
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