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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
At higher frequency of the alternating current, the capacitive reactance Xc
Question # 2
The closed loop gain of the non-inverting amplifier is given by
Question # 3
A diode characteristic curve is a plot between
Question # 4
The length of rotating vector (on a certain scale) represents the:
Question # 5
Which of the following diode is used for the detection of light
Question # 6
The Instantaneous value of alternative current maybe:
Question # 7
The input resistance of the OP-AMP is the resistance between the
Question # 8
The wave form of alternating voltage is the graph between:
Question # 9
The most common source of alternating voltage is:
Question # 10
The amplifier which us used to perform mathematical operations electronically is known as
Question # 11
An A.C. voltmeter read 250 volts. The frequency of alternating is 50 Hz, the peak value of voltage is
Question # 12
The closed loop gain of the inverting amplifier is written as
Question # 13
In describing functions of digital systems, a closed switch will be shown as
Question # 14
When electrons in the transmitting antenna vibrate 94000 time per second, they produce radiowaves having frequency
Question # 15
In which of the following components, pn-junction is used
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 | In a transistor, if the central region is p-type then this type of transistor is known as |
A. p-n-p transistor
B. n-p-n transistor
C. either of these
D. none of these
|
| 2 | At resonance, the impedance of RLC series circuit is |
A. Maximum
B. Zero
C. Minimum
D. Determinate
|
| 3 | A diode characteristic curve is a plot between |
A. current and time
B. voltage and time
C. voltage and current
D. forward voltage and reversed voltage
|
| 4 | Which of the following diode is used for the detection of light |
A. photo diode
B. light emitting diode
C. photo voltaic cell
D. all of them
|
| 5 | Unless stated otherwise, when we speak of A.C. meter reading, we usualy mean: |
A. Peak value
B. RMS value
C. Instantaneous value
D. Peak-to-peak value
|
| 6 | 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
|
| 7 | When electrons in the transmitting antenna vibrate 94000 time per second, they produce radiowaves having frequency |
A. 9.4 kHz
B. 940 kHz
C. 94 kHz
D. None of these
|
| 8 | The power factor of resonant series circuit is |
A. 1
B. 0
C. -1
D. 0.5
|
| 9 | 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
|
| 10 | When the emitter-base junction of a transistor is reverse biased, collector current |
A. Reverses
B. Increases
C. Decreases
D. Stops
|
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