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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
When the pn-junction is connected reversed biased, its resistance is of the order of
Question # 2
The circuit which is used to smooth the output voltage of the full-wave rectification is known as
Question # 3
The closed loop gain of the non-inverting amplifier is given by
Question # 4
In which of the following diodes when an electron combines with a hole during the forward biasing, photon of visible light is emitted.
Question # 5
When electrons in the transmitting antenna vibrate 94000 time per second, they produce radiowaves having frequency
Question # 6
If 250V is the RMS value of alternative voltage, then its peak value Vowill be:
Question # 7
The wave form of alternating voltage is the graph between:
Question # 8
SI unit of impedance is
Question # 9
A resonance curve for RLC series circuit is a plot of frequency versus
Question # 10
Most OP-AMP operates with
Question # 11
When the pn-junction is forward biased. the current flows through it is of the order of
Question # 12
The total reactance of a series RLC circuit at resonance is
Question # 13
Which of the following has a great concentration of impurity
Question # 14
Alternating current can be transmitted:
Question # 15
The magnitude of alternative voltage V:
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 | At resonance, the impedance of RLC series circuit is |
A. Maximum
B. Zero
C. Minimum
D. Determinate
|
| 2 | The basic circuit element in A.C. circuits are: |
A. Resistor and capacitor
B. Resistor and Inductor
C. Capacitor only
D. Both (B) and (C)
|
| 3 | In RLC series circuit, resonance occurs when |
A. XL > Xc
B. XL < Xc
C. XL = Xc
D. None of these
|
| 4 | Which one of the following Electro-magnetic wave have the highest frequency and shortest wave-length |
A. X-rays
B. Ultraviolet rays
C. y-rays
D. Cosmic rays
|
| 5 | 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
|
| 6 | 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
|
| 7 | 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
|
| 8 | The power factor of resonant series circuit is |
A. 1
B. 0
C. -1
D. 0.5
|
| 9 | Due to the high value of the input resistance, practically, the value of the current which flows between the input terminals is |
A. zero
B. small
C. large
D. very large
|
| 10 | 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
|
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