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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 a n-p-n transistor, the conventional current equation can be written as
Question # 2
The device which allows only the flow of an A.C. through a circuit is
Question # 3
The wave form of alternating voltage is the graph between:
Question # 4
For the normal operation of the transistor, its
Question # 5
In a transistor, if the central region is p-type then this type of transistor is known as
Question # 6
The waveform of alternating voltage is a:
Question # 7
An A.C varies as a function of
Question # 8
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 # 9
Which of the following has a great concentration of impurity
Question # 10
The basic circuit element in D.C. circuit is:
Question # 11
In an A.C circuit with resistor only, the current and voltage have a phase angle of
Question # 12
The r.m.s. value of alternating current is equal to its maximum value at angle of
Question # 13
During each cycle, alternating voltage reaches a peak value
Question # 14
The output voltage of half wave rectification is in the form of
Question # 15
Electromagnetic waves transmit energy equal to
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 power factor of resonant series circuit is |
A. 1
B. 0
C. -1
D. 0.5
|
| 2 | In which of the following components, pn-junction is used |
A. light emitting diode
B. photo diode
C. photo voltaic cell
D. all of these
|
| 3 | Average value of A.C voltage during one cycle is |
A. 1
B. Zero
C. Maximum
D. Variable
|
| 4 | The Instantaneous value of alternative current maybe: |
A. The same as its RMS value
B. Greater than its Rms value
C. The same as its peak value
D. Any of these
|
| 5 | 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)
|
| 6 | The phase at the positive peak of an A.C. cycle is: |
A. 0º
B. 90º
C. 180º
D. 0 andᏘ
|
| 7 | 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
|
| 8 | 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
|
| 9 | The value of the potential difference across the depletion region for the case of germanium is |
A. 0.3 V
B. 0.5 V
C. 0.7 V
D. 0.9 V
|
| 10 | 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
|
Test Questions