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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
The circuit which is used to smooth the output voltage of the full-wave rectification is known as
Question # 2
The output voltage of half wave rectification is in the form of
Question # 3
A changing magnetic flux creates around itself
Question # 4
At resonance frequency the impedance of parallel resonance circuit is
Question # 5
The phase angle of a series RLC circuit at resonance is
Question # 6
The length of rotating vector (on a certain scale) represents the:
Question # 7
When the pn-junction is forward biased. the current flows through it is of the order of
Question # 8
If we connected the ordinary DC ammeter to measure alternating current, it would measure its:
Question # 9
A digital system deals with quantities or variables which have
Question # 10
The bridge circuit of full wave rectification uses
Question # 11
A diode characteristic curve is a plot between
Question # 12
The R1= infinity and R2= 0, then the gain of non-inverting amplifier is
Question # 13
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
Question # 14
The most common source of alternating voltage is:
Question # 15
To design a resonant circuit of frequency 100 KHz with an inductor of inductance 5 mH, we need a capacitor of capacitance
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 -
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Q Qura-tul-Ain Ansari 13 - Mar - 2023 06 Min 42 Sec 60/60 -
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T tehreemnadeem 11 - Jul - 2022 04 Min 13 Sec 35/60 -
M Muhammad Muzammil 11 - Mar - 2024 02 Min 14 Sec 30/60
ECAT Physics Chapter 16 Important MCQ's
| Sr.# | Question | Answer |
|---|---|---|
| 1 | The bridge circuit of full wave rectification uses |
A. one diode
B. two diode
C. three diode
D. four diode
|
| 2 | A sinusoidally alternating voltage or current can be graphically represented by a: |
A. Vector
B. Rotating vector
C. Clockwise vector
D. Anticlockwise voltage vector
|
| 3 | The r.m.s. value of alternating current is equal to its maximum value at angle of |
A. 60°
B. 45°
C. 30°
D. 90°
|
| 4 | Most OP-AMP operates with |
A. + 6 V supply
B. + 10 V supply
C. + 12 V supply
D. + 24 V supply
|
| 5 | The waveform of alternating voltage is a: |
A. Square
B. Rectangular
C. Saw-tooth
D. Sinusoidal
|
| 6 | In series RC circuit when R=Xc, then the phase angle is |
A. 0°
B. 90°
C. 70°
D. 45°
|
| 7 | The closed loop gain of the non-inverting amplifier is given by |
A. G = R2/R1
B. G = -R2/R1
C. G = 1 - R2/R1
D. G = 1 + T2/R1
|
| 8 | In an A.C circuit with resistor only, the current and voltage have a phase angle of |
A. 90°
B. 0°
C. 180°
D. none of these
|
| 9 | Electromagnetic waves transmit energy equal to |
A. 1/2 mv2
B. moc2
C. hf/c
D. hf
|
| 10 | 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
|
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