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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 entire wave form of sinusoidal voltage is actually a set of all the:
Question # 2
The closed loop gain of the non-inverting amplifier is given by
Question # 3
In which of the following components, pn-junction is used
Question # 4
In series RC circuit when R=Xc, then the phase angle is
Question # 5
The output voltage of half wave rectification is in the form of
Question # 6
The wave form of alternating voltage is the graph between:
Question # 7
A digital system deals with quantities or variables which have
Question # 8
The value of current gain of n-p-n transistor is of the order of
Question # 9
A changing magnetic flux creates around itself
Question # 10
Due to the high value of the input resistance, practically, the value of the current which flows between the input terminals is
Question # 11
During each cycle, alternating voltage reaches a peak value
Question # 12
The value of output resistance of OP-AMOP is of the order of
Question # 13
In which of the following diodes when an electron combines with a hole during the forward biasing, photon of visible light is emitted.
Question # 14
The device which allows only the flow of an A.C. through a circuit is
Question # 15
At resonance frequency the impedance of parallel resonance circuit is
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 -
M Muneeb ur Rehman 29 - Jun - 2026 01 Min 47 Sec 56/60 -
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
ECAT Physics Chapter 16 Important MCQ's
| Sr.# | Question | Answer |
|---|---|---|
| 1 | 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
|
| 2 | 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
|
| 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 |
A. base and emitter
B. collector and emitter
C. base and collector
D. any one of these
|
| 4 | Mathematical manipulation of the two quantized states can be best carried if they are represented by |
A. high - low
B. yes - no
C. on - off
D. 0 - 1
|
| 5 | Due to the high value of the input resistance, practically, the value of the current which flows between the input terminals is |
A. zero
B. small
C. large
D. very large
|
| 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 | Most OP-AMP operates with |
A. + 6 V supply
B. + 10 V supply
C. + 12 V supply
D. + 24 V supply
|
| 8 | Nowadays, Most of the electric energy is produced by the A.C. generators using: |
A. Hydal water
B. Geothermal energy
C. Solar energy
D. Biomass
|
| 9 | Which of the following has a great concentration of impurity |
A. base
B. emitter
C. collector
D. none of these
|
| 10 | 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
|
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