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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 Instantaneous value of alternative current maybe:
Question # 2
The output voltage of half wave rectification is in the form of
Question # 3
The basic circuit element in D.C. circuit is:
Question # 4
The device which allows only the flow of an A.C. through a circuit is
Question # 5
During the negative half-cycle of the half-wave rectification, the diode
Question # 6
An A.C. voltmeter read 250 volts. The frequency of alternating is 50 Hz, the peak value of voltage is
Question # 7
The input resistance of the OP-AMP is the resistance between the
Question # 8
The power factor of resonant series circuit is
Question # 9
The time interval during which the Voltage source changes its polarity once is known as:
Question # 10
The sum of positive and negative peak values is called:
Question # 11
The RMS value of alternating current is:
Question # 12
In RLC series circuit, resonance occurs when
Question # 13
Alternating current is produced by a voltage source which polarity:
Question # 14
The highest value reached by the voltage or current:
Question # 15
At resonance frequency the impedance of parallel resonance circuit is
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 -
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 | At resonance frequency the impedance of parallel resonance circuit is |
A. Maximum
B. Minimum
C. Zero
D. None of the above
|
| 2 | The entire wave form of sinusoidal voltage is actually a set of all the: |
A. Positive maximum value + Voand negative maximum value -Vo
B. Posiotive maximum value +Vo and zero
C. Zero and negative maximum value -Vo
D. Any of these
|
| 3 | An A.C varies as a function of |
A. Current
B. Voltage
C. Time
D. Charge
|
| 4 | 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
|
| 5 | The waveform of alternating voltage is a: |
A. Square
B. Rectangular
C. Saw-tooth
D. Sinusoidal
|
| 6 | When the emitter-base junction of a transistor is reverse biased, collector current |
A. Reverses
B. Increases
C. Decreases
D. Stops
|
| 7 | The length of rotating vector (on a certain scale) represents the: |
A. Peak value of alternating quantity
B. RMS value of alternating quantity
C. Instantaneous value of alternating quantity
D. Either (B) or (C)
|
| 8 | The value of the input resistance of OP-AMP is of the order of |
A. few ohms
B. few hundred ohms
C. several kilo ohms
D. several maga ohms
|
| 9 | A P-N juction or semiconductor diode cannot be used as |
A. A rectifier
B. Detector
C. Oscillator
D. An amplifier
|
| 10 | The value of current gain of n-p-n transistor is of the order of |
A. tens
B. hundreds
C. thousands
D. ten thousands
|
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