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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 basic circuit elements of A.C circuit are
Question # 2
The output voltage of half wave rectification is in the form of
Question # 3
Which of the following diodes can operate in the reverse biased condition
Question # 4
The total reactance of a series RLC circuit at resonance is
Question # 5
The magnitude of alternative voltage V:
Question # 6
A diode characteristic curve is a plot between
Question # 7
The basic circuit element in D.C. circuit is:
Question # 8
The phase at the positive peak of an A.C. cycle is:
Question # 9
For the normal operation of the transistor, its
Question # 10
In a transistor, if the central region is p-type then this type of transistor is known as
Question # 11
Which of the following diode is used to derive the current in external circuit when light is incident in the circuit
Question # 12
Peak value of alternative current is:
Peak value of alternative current is:
Question # 13
In a normally biased n-p-n transistor, an electron c current IEflows from the
Question # 14
The RMS value of alternating current is:
Question # 15
The sum of positive and negative peak values is called:
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 -
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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 -
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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 | At higher frequency of the alternating current, the capacitive reactance Xc |
A. Increases
B. Decreases
C. Remains the same
D. Increases only when the voltage increases
|
| 2 | The waveform of alternating voltage is a: |
A. Square
B. Rectangular
C. Saw-tooth
D. Sinusoidal
|
| 3 | Which one of the following Electro-magnetic wave have the highest frequency and shortest wave-length |
A. X-rays
B. Ultraviolet rays
C. y-rays
D. Cosmic rays
|
| 4 | If we connected the ordinary DC ammeter to measure alternating current, it would measure its: |
A. Instantaneous value
B. RMS value
C. Value averaged over a cycle
D. Either (B) or (C)
|
| 5 | At resonance, the phase angle for RLC series resonance circuit equals |
A. 0°
B. 90°
C. 180°
D. 270°
|
| 6 | The value of the potential difference across the depletion region for the case of germanium is |
A. 0.3 V
B. 0.5 V
C. 0.7 V
D. 0.9 V
|
| 7 | For the normal operation of the transistor, its |
A. emitter-base and collector base junctions are forward biased
B. emitter-base junction is reversed biased and collector base junction is forward biased
C. emitter-base junction is forward biased and collector-base junction is reverse biased
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 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
|
| 10 | The device which allows only the flow of an A.C. through a circuit is |
A. Capacitor
B. Inductor
C. D.C. motor
D. Battery
|
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