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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
Nowadays, Most of the electric energy is produced by the A.C. generators using:
Question # 2
The phase angle of a series RLC circuit at resonance is
Question # 3
In a normally biased n-p-n transistor, an electron c current IEflows from the
Question # 4
In n-p-n transistor, emitter base junction is kept
Question # 5
When the pn-junction is in reversed biased, current flows through the junction due to the
Question # 6
In half wave rectification
Question # 7
In free space, the speed of electromagnetic waves is
Question # 8
The basic circuit element in D.C. circuit is:
Question # 9
To design a resonant circuit of frequency 100 KHz with an inductor of inductance 5 mH, we need a capacitor of capacitance
Question # 10
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 # 11
The input resistance of the OP-AMP is the resistance between the
Question # 12
An A.C. voltage is applied across the inductor. When the frequency of the voltage is increased, the current
Question # 13
When the p-n junction is forward biased its resistance is of the order of
Question # 14
The output voltage of half wave rectification is in the form of
Question # 15
During each cycle, alternating voltage reaches a peak value
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 | In series RC circuit when R=Xc, then the phase angle is |
A. 0°
B. 90°
C. 70°
D. 45°
|
| 2 | 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
|
| 3 | 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
|
| 4 | In n-p-n transistor, emitter base junction is kept |
A. reversed
B. forward biased
C. may be reversed or may be forward biased
D. none of these
|
| 5 | The power factor of resonant series circuit is |
A. 1
B. 0
C. -1
D. 0.5
|
| 6 | During each cycle, alternating voltage reaches a peak value |
A. One time
B. Two times
C. Four times
D. A number of times depending on the frequency
|
| 7 | The R1= infinity and R2= 0, then the gain of non-inverting amplifier is |
A. zero
B. infinity
C. one
D. any one of these
|
| 8 | Transmitting antenna emits |
A. Magnetic waves
B. Electric waves
C. Electromagnetic waves
D. Sound waves
|
| 9 | 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
|
| 10 | The device which allows only the flow of an A.C. through a circuit is |
A. Capacitor
B. Inductor
C. D.C. motor
D. Battery
|
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