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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
During the negative half-cycle of the half-wave rectification, the diode
Question # 2
The average of A.C. current and voltage over a complete cycle is
Question # 3
For a n-p-n transistor, the conventional current equation can be written as
Question # 4
Which one of the following Electro-magnetic wave have the highest frequency and shortest wave-length
Question # 5
In half wave rectification
Question # 6
When electrons in the transmitting antenna vibrate 94000 time per second, they produce radiowaves having frequency
Question # 7
The power factor of resonant series circuit is
Question # 8
Which of the following has a great concentration of impurity
Question # 9
An A.C. voltage is applied across the inductor. When the frequency of the voltage is increased, the current
Question # 10
The basic circuit elements of A.C circuit are
Question # 11
A sinusoidally alternating voltage or current can be graphically represented by a:
Question # 12
Chock consumes externally small
Question # 13
The value of the input resistance of OP-AMP is of the order of
Question # 14
If we connect a A.C. volt meter to read A.C. voltage, It would read its:
Question # 15
In which of the following diodes when an electron combines with a hole during the forward biasing, photon of visible light is emitted.
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 | The basic circuit element in A.C. circuits are: |
A. Resistor and capacitor
B. Resistor and Inductor
C. Capacitor only
D. Both (B) and (C)
|
| 2 | Which of the following diodes can operate in the reverse biased condition |
A. photo diode
B. light emitting diode
C. photo voltaic cell
D. none of these
|
| 3 | Average value of A.C voltage during one cycle is |
A. 1
B. Zero
C. Maximum
D. Variable
|
| 4 | 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
|
| 5 | In half wave rectification |
A. both halves of the input voltage is used
B. only one half of the input voltage is used
C. either of these
D. none of these
|
| 6 | The power factor of resonant series circuit is |
A. 1
B. 0
C. -1
D. 0.5
|
| 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 | The bridge circuit of full wave rectification uses |
A. one diode
B. two diode
C. three diode
D. four diode
|
| 9 | When either L or C is increased, the resonant frequency of the RLC series circuit |
A. Increases
B. Decreases
C. Remains the same
D. Becomes zero
|
| 10 | The magnitude of alternative voltage V: |
A. Always increase
B. Always decrease
C. Remains constant
D. Does not remain constant
|
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