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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 value of the potential difference across the depletion region for the case of germanium is
Question # 2
Unless stated otherwise, when we speak of A.C. meter reading, we usualy mean:
Question # 3
A p-n junction is formed when a crystal of silicon is growth in such a way that its one half is doped with trivalent impurity and the other half with a impurity from
Question # 4
For a n-p-n transistor, the conventional current equation can be written as
Question # 5
The phase at the positive peak of an A.C. cycle is:
Question # 6
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 # 7
The R1= infinity and R2= 0, then the gain of non-inverting amplifier is
Question # 8
The amplifier which us used to perform mathematical operations electronically is known as
Question # 9
The r.m.s. value of alternating current is equal to its maximum value at angle of
Question # 10
The sum of positive and negative peak values is called:
Question # 11
The RMS value of alternating current is:
Question # 12
A diode characteristic curve is a plot between
Question # 13
The value of current gain of n-p-n transistor is of the order of
Question # 14
The most common source of alternating voltage is:
Question # 15
In half wave rectification
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 | 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
|
| 3 | The amplifier which us used to perform mathematical operations electronically is known as |
A. calculator
B. OP-AMP
C. computer
D. any one of them
|
| 4 | In a transistor, the central region is called |
A. collector
B. emitter
C. base
D. none of them
|
| 5 | Alternating current can be transmitted: |
A. To long distance
B. At very high cost
C. At very low cost
D. Both (A) and (C)
|
| 6 | Chock consumes externally small |
A. Charge
B. Current
C. Power
D. Potential
|
| 7 | The length of rotating vector (on a certain scale) represents the: |
A. Peak value of alternating quantity
B. RMS value of alternating quantity
C. Instantaneous value of alternating quantity
D. Either (B) or (C)
|
| 8 | The phase angle of a series RLC circuit at resonance is |
A. 180°
B. 90°
C. 0°
D. None of the these
|
| 9 | When the p-n junction is forward biased its resistance is of the order of |
A. few mega ohms
B. few kilo ohms
C. few ohms
D. few milli ohms
|
| 10 | 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
|
Test Questions