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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
In a transistor, the central region is called
Question # 2
Due to the high value of the input resistance, practically, the value of the current which flows between the input terminals is
Question # 3
The phase at the positive peak of an A.C. cycle is:
Question # 4
The basic circuit element in A.C. circuits are:
Question # 5
To design a resonant circuit of frequency 100 KHz with an inductor of inductance 5 mH, we need a capacitor of capacitance
Question # 6
In a transistor, if the central region is p-type then this type of transistor is known as
Question # 7
The Instantaneous value of alternative current maybe:
Question # 8
The output voltage of half wave rectification is in the form of
Question # 9
The amplifier which us used to perform mathematical operations electronically is known as
Question # 10
The device which allows only the flow of an A.C. through a circuit is
Question # 11
The closed loop gain of the non-inverting amplifier is given by
Question # 12
A digital system deals with quantities or variables which have
Question # 13
Which one of the following Electro-magnetic wave have the highest frequency and shortest wave-length
Question # 14
The alternative voltage of current is actually measured by:
Question # 15
Alternating current is produced by a voltage source which polarity:
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 | When the emitter-base junction of a transistor is reverse biased, collector current |
A. Reverses
B. Increases
C. Decreases
D. Stops
|
| 2 | The alternative voltage of current is actually measured by: |
A. Its RMS value
B. Square root of its mean square value
C. Instantaneous value
D. Peak value
|
| 3 | When either L or C is increased, the resonant frequency of the RLC series circuit |
A. Increases
B. Decreases
C. Remains the same
D. Becomes zero
|
| 4 | 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
|
| 5 | In half wave rectification |
A. both halves of the input voltage is used
B. only one half of the input voltage is used
C. either of these
D. none of these
|
| 6 | 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
|
| 7 | In series RC circuit when R=Xc, then the phase angle is |
A. 0°
B. 90°
C. 70°
D. 45°
|
| 8 | Which one of the following waves belongs to electromagnetic spectrum |
A. Radio and TV waves
B. Radar waves
C. Micro waves
D. All of them
|
| 9 | 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
|
| 10 | At resonance frequency the impedance of parallel resonance circuit is |
A. Maximum
B. Minimum
C. Zero
D. None of the above
|
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