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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 impedance of RLC series resonance circuit at resonant frequency is
Question # 2
A sinusoidally alternating voltage or current can be graphically represented by a:
Question # 3
Which one of the following waves belongs to electromagnetic spectrum
Question # 4
In a normally biased n-p-n transistor, an electron c current IEflows from the
Question # 5
If the value of C in a series RLC circuit is increased, the resonant frequency
Question # 6
Which of the following has a great concentration of impurity
Question # 7
The magnitude of alternative voltage V:
Question # 8
When the emitter-base junction of a transistor is reverse biased, collector current
Question # 9
Alternating current is produced by a voltage source which polarity:
Question # 10
When either L or C is increased, the resonant frequency of the RLC series circuit
Question # 11
In a transistor, the central region is called
Question # 12
Alternating current can be transmitted:
Question # 13
The amplifier which us used to perform mathematical operations electronically is known as
Question # 14
The closed loop gain of the inverting amplifier is written as
Question # 15
Due to the high value of the input resistance, practically, the value of the current which flows between the input terminals 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 | A changing magnetic flux creates around itself |
A. An electromotive force
B. An electric field (changing electric flux)
C. Magnetic field
D. None of the above
|
| 2 | Alternating current can induce voltage because it has a |
A. High peak value
B. Varying magnetic field
C. Stronger field than direct curren
D. Constant magnetic field
|
| 3 | The circuit which is used to smooth the output voltage of the full-wave rectification is known as |
A. transformer
B. rectifier
C. filter
D. none of these
|
| 4 | The closed loop gain of the non-inverting amplifier is given by |
A. G = R2/R1
B. G = -R2/R1
C. G = 1 - R2/R1
D. G = 1 + T2/R1
|
| 5 | In describing functions of digital systems, a closed switch will be shown as |
A. 0
B. 1
C. low
D. any one of these
|
| 6 | If we connected the ordinary DC ammeter to measure alternating current, it would measure its: |
A. Instantaneous value
B. RMS value
C. Value averaged over a cycle
D. Either (B) or (C)
|
| 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 sum of positive and negative peak values is called: |
A. Instantaneous value
B. Peak value
C. Rms valuie
D. Peak-to peak-value
|
| 9 | The impedance of RLC series resonance circuit at resonant frequency is |
A. Greater than R
B. Equal to R
C. Less than R
D. None of these
|
| 10 | Electromagnetic waves transmit energy equal to |
A. 1/2 mv2
B. moc2
C. hf/c
D. hf
|
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