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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
Alternating current can induce voltage because it has a
Question # 2
The open loop gain of OP-AMP is of the order of
Question # 3
In free space, the speed of electromagnetic waves is
Question # 4
When the pn-junction is forward biased. the current flows through it is of the order of
Question # 5
In frequency modulation (FM), the carrier waves amplitude
Question # 6
At higher frequency of the alternating current, the capacitive reactance Xc
Question # 7
A changing magnetic flux creates around itself
Question # 8
In describing functions of digital systems, a closed switch will be shown as
Question # 9
Peak value of alternative current is:
Peak value of alternative current is:
Question # 10
The amplifier which us used to perform mathematical operations electronically is known as
Question # 11
The basic circuit elements of A.C circuit are
Question # 12
Due to the high value of the input resistance, practically, the value of the current which flows between the input terminals is
Question # 13
The power factor of resonant series circuit is
Question # 14
Most OP-AMP operates with
Question # 15
Which of the following diode is used for the detection of light
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 -
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 -
M musman shahid 03 - Jun - 2024 02 Min 53 Sec 30/60
ECAT Physics Chapter 16 Important MCQ's
| Sr.# | Question | Answer |
|---|---|---|
| 1 | Average value of A.C voltage during one cycle is |
A. 1
B. Zero
C. Maximum
D. Variable
|
| 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 | In series RC circuit when R=Xc, then the phase angle is |
A. 0°
B. 90°
C. 70°
D. 45°
|
| 4 | When the pn-junction is forward biased. the current flows through it is of the order of |
A. mili-amperes
B. amperes
C. nano-amperes
D. micro-amperes
|
| 5 | The power factor of resonant series circuit is |
A. 1
B. 0
C. -1
D. 0.5
|
| 6 | Chock consumes externally small |
A. Charge
B. Current
C. Power
D. Potential
|
| 7 | To design a resonant circuit of frequency 100 KHz with an inductor of inductance 5 mH, we need a capacitor of capacitance |
A. 5.07 pF
B. 50 pF
C. 0.507 pF
D. 507 pF
|
| 8 | The most common source of alternating voltage is: |
A. Motor
B. Transformer
C. AC genrator
D. Both (A) and (C)
|
| 9 | The amplifier which us used to perform mathematical operations electronically is known as |
A. calculator
B. OP-AMP
C. computer
D. any one of them
|
| 10 | An A.C varies as a function of |
A. Current
B. Voltage
C. Time
D. Charge
|
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