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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
The highest value reached by the voltage or current:
Question # 3
When a transistor is used as a switch the circuit in which the current is to be switched OFF and ON, is connected between the
Question # 4
The length of rotating vector (on a certain scale) represents the:
Question # 5
Which of the following diodes can operate in the reverse biased condition
Question # 6
In half wave rectification
Question # 7
The phase at the positive peak of an A.C. cycle is:
Question # 8
In free space, the speed of electromagnetic waves is
Question # 9
If we connected the ordinary DC ammeter to measure alternating current, it would measure its:
Question # 10
In series RC circuit when R=Xc, then the phase angle is
Question # 11
A P-N juction or semiconductor diode cannot be used as
Question # 12
If the value of C in a series RLC circuit is increased, the resonant frequency
Question # 13
The entire wave form of sinusoidal voltage is actually a set of all the:
Question # 14
Which one of the following waves belongs to electromagnetic spectrum
Question # 15
In which of the following components, pn-junction is used
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 | The entire wave form of sinusoidal voltage is actually a set of all the: |
A. Positive maximum value + Voand negative maximum value -Vo
B. Posiotive maximum value +Vo and zero
C. Zero and negative maximum value -Vo
D. Any of these
|
| 2 | Which of the following has a great concentration of impurity |
A. base
B. emitter
C. collector
D. none of these
|
| 3 | In frequency modulation (FM), the carrier waves amplitude |
A. Remains constant
B. Increase
C. Decreases
D. None of these
|
| 4 | 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 |
A. 2nd group
B. fourth group
C. fifth group
D. sixth group
|
| 5 | For normal operation of transistor, the batteries |
A. VCCis of much lower value than VBB
B. VCCis of much higher value than VBB
C. VCC is equal toVBB
D. none of these
|
| 6 | Chock consumes externally small |
A. Charge
B. Current
C. Power
D. Potential
|
| 7 | Which of the following diode is used to derive the current in external circuit when light is incident in the circuit |
A. photo diode
B. light emitting diode
C. photo voltaic cell
D. none of these
|
| 8 | Transmitting antenna emits |
A. Magnetic waves
B. Electric waves
C. Electromagnetic waves
D. Sound waves
|
| 9 | The open loop gain of OP-AMP is of the order of |
A. 102
B. 103
C. 104
D. 105
|
| 10 | The value of output resistance of OP-AMOP is of the order of |
A. few ohms
B. few hundred ohms
C. several kilo ohms
D. several mega ohms
|
Test Questions