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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 open loop gain of OP-AMP is of the order of
Question # 2
Which of the following has a great concentration of impurity
Question # 3
In which of the following components, pn-junction is used
Question # 4
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 # 5
When the pn-junction is forward biased. the current flows through it is of the order of
Question # 6
If we connect a A.C. volt meter to read A.C. voltage, It would read its:
Question # 7
The impedance of RLC series resonance circuit at resonant frequency is
Question # 8
The alternative voltage of current is actually measured by:
Question # 9
The basic circuit element in A.C. circuits are:
Question # 10
A changing magnetic flux creates around itself
Question # 11
Alternating current can induce voltage because it has a
Question # 12
The magnitude of alternative voltage V:
Question # 13
The output voltage of half wave rectification is in the form of
Question # 14
In free space, the speed of electromagnetic waves is
Question # 15
SI unit of impedance 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 -
A Abdullah Baloch 02 - Aug - 2024 02 Min 33 Sec 55/60 -
A Alishba Farooq 09 - Mar - 2024 16 Min 16 Sec 55/60 -
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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 | 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
|
| 3 | At resonance frequency the impedance of parallel resonance circuit is |
A. Maximum
B. Minimum
C. Zero
D. None of the above
|
| 4 | The total reactance of a series RLC circuit at resonance is |
A. zero
B. Equal to the resistance
C. Infinity
D. Capacitive
|
| 5 | The waveform of alternating voltage is a: |
A. Square
B. Rectangular
C. Saw-tooth
D. Sinusoidal
|
| 6 | A digital system deals with quantities or variables which have |
A. only one state
B. only two discrete states
C. three discrete states
D. four discrete states
|
| 7 | Average value of A.C voltage during one cycle is |
A. 1
B. Zero
C. Maximum
D. Variable
|
| 8 | The wave form of alternating voltage is the graph between: |
A. Voltage across X-axis and time across y-axis
B. Current and time
C. Voltage along y-axis and time along x-axis
D. Voltage and current
|
| 9 | 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
|
| 10 | In describing functions of digital systems, a closed switch will be shown as |
A. 0
B. 1
C. low
D. any one of these
|
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