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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 bridge circuit of full wave rectification uses
Question # 2
A sinusoidally alternating voltage or current can be graphically represented by a:
Question # 3
In which of the following diodes when an electron combines with a hole during the forward biasing, photon of visible light is emitted.
Question # 4
The highest value reached by the voltage or current:
Question # 5
An A.C. voltage is applied across the inductor. When the frequency of the voltage is increased, the current
Question # 6
The circuit which is used to smooth the output voltage of the full-wave rectification is known as
Question # 7
The impedance of RLC series resonance circuit at resonant frequency is
Question # 8
To design a resonant circuit of frequency 100 KHz with an inductor of inductance 5 mH, we need a capacitor of capacitance
Question # 9
The basic circuit element in D.C. circuit is:
Question # 10
The wave form of alternating voltage is the graph between:
Question # 11
SI unit of impedance is
Question # 12
For the normal operation of the transistor, its
Question # 13
For a n-p-n transistor, the conventional current equation can be written as
Question # 14
The r.m.s. value of alternating current is equal to its maximum value at angle of
Question # 15
In a transistor, the central region 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 -
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 | When the emitter-base junction of a transistor is reverse biased, collector current |
A. Reverses
B. Increases
C. Decreases
D. Stops
|
| 2 | A P-N juction or semiconductor diode cannot be used as |
A. A rectifier
B. Detector
C. Oscillator
D. An amplifier
|
| 3 | Which one of the following waves belongs to electromagnetic spectrum |
A. Radio and TV waves
B. Radar waves
C. Micro waves
D. All of them
|
| 4 | The input resistance of the OP-AMP is the resistance between the |
A. (-) input and output
B. (+) input and output
C. (-) and (+) inputs
D. between any inputs
|
| 5 | An A.C. voltage is applied across the inductor. When the frequency of the voltage is increased, the current |
A. Decreases
B. Increases
C. Does not change
D. Momentarily goes to zero
|
| 6 | The wave form of alternating voltage is the graph between: |
A. Voltage across X-axis and time across y-axis
B. Current and time
C. Voltage along y-axis and time along x-axis
D. Voltage and current
|
| 7 | Average value of A.C voltage during one cycle is |
A. 1
B. Zero
C. Maximum
D. Variable
|
| 8 | The average of A.C. current and voltage over a complete cycle is |
A. Maximum
B. zero
C. Neither zero nor maximum
D. None of these
|
| 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 emitter-base junction of a transistor is forward-biased and collector-base junction is reverse-biased. If the base current is increased, its |
A. Icwill decrease
B. VCEwill increase
C. ICwill increase
D. VCCwill increase
|
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