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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
Most OP-AMP operates with
Question # 2
If we connected the ordinary DC ammeter to measure alternating current, it would measure its:
Question # 3
An A.C varies as a function of
Question # 4
Which one of the following Electro-magnetic wave have the highest frequency and shortest wave-length
Question # 5
SI unit of impedance is
Question # 6
In series RC circuit when R=Xc, then the phase angle is
Question # 7
During each cycle, alternating voltage reaches a peak value
Question # 8
In a transistor, if the central region is p-type then this type of transistor is known as
Question # 9
In n-p-n transistor, emitter base junction is kept
Question # 10
The device which allows only the flow of an A.C. through a circuit is
Question # 11
A signal appears after amplification, at the output terminal with a phase shift of 180° , if it is applied at
Question # 12
Which of the following diode is used for the detection of light
Question # 13
The entire wave form of sinusoidal voltage is actually a set of all the:
Question # 14
In free space, the speed of electromagnetic waves is
Question # 15
The value of the input resistance of OP-AMP is of the order of
Top Scorers Of ECAT Physics Chapter 16 Alternating Current MCQ`s Test
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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 -
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M Muhammad Muzammil 11 - Mar - 2024 02 Min 14 Sec 30/60
ECAT Physics Chapter 16 Important MCQ's
| Sr.# | Question | Answer |
|---|---|---|
| 1 | Nowadays, Most of the electric energy is produced by the A.C. generators using: |
A. Hydal water
B. Geothermal energy
C. Solar energy
D. Biomass
|
| 2 | A digital system deals with quantities or variables which have |
A. only one state
B. only two discrete states
C. three discrete states
D. four discrete states
|
| 3 | 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)
|
| 4 | A p-n junction is formed when a crystal of silicon is growth in such a way that its one half is doped with trivalent impurity and the other half with a impurity from |
A. 2nd group
B. fourth group
C. fifth group
D. sixth group
|
| 5 | The sum of positive and negative peak values is called: |
A. Instantaneous value
B. Peak value
C. Rms valuie
D. Peak-to peak-value
|
| 6 | Which of the following diodes can operate in the reverse biased condition |
A. photo diode
B. light emitting diode
C. photo voltaic cell
D. none of these
|
| 7 | The wave form of alternating voltage is the graph between: |
A. Voltage across X-axis and time across y-axis
B. Current and time
C. Voltage along y-axis and time along x-axis
D. Voltage and current
|
| 8 | The basic circuit elements of A.C circuit are |
A. Resistor
B. Inductor
C. Capacitor
D. All the three
|
| 9 | The entire wave form of sinusoidal voltage is actually a set of all the: |
A. Positive maximum value + Voand negative maximum value -Vo
B. Posiotive maximum value +Vo and zero
C. Zero and negative maximum value -Vo
D. Any 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