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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
Peak value of alternative current is:
Peak value of alternative current is:
Question # 2
The value of the potential difference across the depletion region for the case of germanium is
Question # 3
The impedance of RLC series resonance circuit at resonant frequency is
Question # 4
The emitter-base junction of a transistor is forward-biased and collector-base junction is reverse-biased. If the base current is increased, its
Question # 5
The RMS value of alternating current is:
Question # 6
The average of A.C. current and voltage over a complete cycle is
Question # 7
In a transistor, the central region is called
Question # 8
The Instantaneous value of alternative current maybe:
Question # 9
The value of current gain of n-p-n transistor is of the order of
Question # 10
If we connected the ordinary DC ammeter to measure alternating current, it would measure its:
Question # 11
If we connect a A.C. volt meter to read A.C. voltage, It would read its:
Question # 12
In frequency modulation (FM), the carrier waves amplitude
Question # 13
An A.C varies as a function of
Question # 14
When the p-n junction is forward biased its resistance is of the order of
Question # 15
The highest value reached by the voltage or current:
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 frequency modulation (FM), the carrier waves amplitude |
A. Remains constant
B. Increase
C. Decreases
D. None of these
|
| 2 | In free space, the speed of electromagnetic waves is |
A. 3 x 108ms-1
B. 3 x 106ms-1
C. 4 x 107ms-1
D. 3 x 109ms-1
|
| 3 | When electrons in the transmitting antenna vibrate 94000 time per second, they produce radiowaves having frequency |
A. 9.4 kHz
B. 940 kHz
C. 94 kHz
D. None of these
|
| 4 | 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)
|
| 5 | 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
|
| 6 | 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
|
| 7 | When the pn-junction is forward biased. the current flows through it is of the order of |
A. mili-amperes
B. amperes
C. nano-amperes
D. micro-amperes
|
| 8 | Conversion of alternating current into direct current is called |
A. amplification
B. rectification
C. conduction
D. polarization
|
| 9 | The bridge circuit of full wave rectification uses |
A. one diode
B. two diode
C. three diode
D. four diode
|
| 10 | The alternative voltage of current is actually measured by: |
A. Its RMS value
B. Square root of its mean square value
C. Instantaneous value
D. Peak value
|
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