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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
For normal operation of transistor, the batteries
Question # 2
The output voltage of half wave rectification is in the form of
Question # 3
The closed loop gain of the inverting amplifier is written as
Question # 4
During the negative half-cycle of the half-wave rectification, the diode
Question # 5
When the p-n junction is forward biased its resistance is of the order of
Question # 6
The highest value reached by the voltage or current:
Question # 7
The power factor of resonant series circuit is
Question # 8
The input resistance of the OP-AMP is the resistance between the
Question # 9
If we connect a A.C. volt meter to read A.C. voltage, It would read its:
Question # 10
The circuit which is used to smooth the output voltage of the full-wave rectification is known as
Question # 11
Average value of A.C voltage during one cycle is
Question # 12
An A.C. voltage is applied across the inductor. When the frequency of the voltage is increased, the current
Question # 13
In n-p-n transistor, emitter base junction is kept
Question # 14
The value of current gain of n-p-n transistor is of the order of
Question # 15
Nowadays, Most of the electric energy is produced by the A.C. generators using:
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 | In a transistor, the central region is called |
A. collector
B. emitter
C. base
D. none of them
|
| 2 | For a n-p-n transistor, the conventional current equation can be written as |
A. IE+ IC= IB
B. IC- IB= IE
C. IC+ IB= IE
D. IB+ IE= IC
|
| 3 | A signal is amplified at the output without any change of phase, if it is applied at the |
A. inverting input
B. non-inverting input
C. at any of the input
D. none of these
|
| 4 | The phase angle of a series RLC circuit at resonance is |
A. 180°
B. 90°
C. 0°
D. None of the these
|
| 5 | Which of the following diode is used for the detection of light |
A. photo diode
B. light emitting diode
C. photo voltaic cell
D. all of them
|
| 6 | A sinusoidally alternating voltage or current can be graphically represented by a: |
A. Vector
B. Rotating vector
C. Clockwise vector
D. Anticlockwise voltage vector
|
| 7 | When the pn-junction is in reversed biased, current flows through the junction due to the |
A. majority carriers
B. minority carriers
C. either of them
D. none of them
|
| 8 | If 250V is the RMS value of alternative voltage, then its peak value Vowill be: |
A. 353.5V
B. 250V
C. 175V
D. zero
|
| 9 | SI unit of impedance is |
A. hertz
B. henry
C. ampere
D. ohms
|
| 10 | 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
|
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