Online Electronics Test - Electronics Test - Random


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Instruction:

  • Total number of questions : 20.
  • Time alloted : 30 minutes.
  • Each question carry 1 mark, no negative marks.
  • DO NOT refresh the page.
  • All the best :-).

1.

What is the current through the capacitor in the given circuit?

A.
3.5 mA
B.
5.5 mA
C.
9 mA
D.
11.4 mA

Your Answer: Option (Not Answered)

Correct Answer: Option A

Learn more problems on : RLC Circuits and Resonance

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2.

If the output voltage were taken across the resistor in the given circuit, the circuit would be a band-stop filter.

A.
True
B.
False

Your Answer: Option (Not Answered)

Correct Answer: Option A

Learn more problems on : RLC Circuits and Resonance

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3.

An S-R flip-flop is an example of a bistable multivibrator circuit.

A.
True
B.
False

Your Answer: Option (Not Answered)

Correct Answer: Option A

Learn more problems on : Operational Amplifiers

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4.

A comparator is an example of a(n)

A.
active filter
B.
current source
C.
linear circuit
D.
nonlinear circuit

Your Answer: Option (Not Answered)

Correct Answer: Option D

Learn more problems on : Basic Op-Amp Circuits

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5.

A basic electric circuit is made up of what components?

A.
A load, a resistor, and a conductive path for current
B.
A voltage source, a load, and a conductive path for current
C.
A voltage source, a conductive path for current, and a battery
D.
A conductive path for current, a battery, and a copper wire

Your Answer: Option (Not Answered)

Correct Answer: Option B

Learn more problems on : Voltage and Current

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6.

Observed voltages not being shared identify components in parallel in a series–parallel circuit.

A.
True
B.
False

Your Answer: Option (Not Answered)

Correct Answer: Option B

Learn more problems on : Series-Parallel Circuits

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7.

Bleeder current is the total current left after the total divider current is subtracted from the total current into the circuit.

A.
True
B.
False

Your Answer: Option (Not Answered)

Correct Answer: Option B

Learn more problems on : Series-Parallel Circuits

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8.


A magnetic field is produced around a current-carrying conductor.

A.
True
B.
False

Your Answer: Option (Not Answered)

Correct Answer: Option A

Learn more problems on : Magnetism and Electromagnetism

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9.

As a generator armature passes the 270 degree point, the induced voltage is:

A.
at maximum negative
B.
between maximum negative and zero
C.
at maximum positive
D.
between zero and maximum positive

Your Answer: Option (Not Answered)

Correct Answer: Option A

Learn more problems on : Inductors

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10.

Components or combinations of components with common currents, in a series–parallel circuit, are in:

A.
parallel with each other
B.
series with each other
C.
either series or parallel with each other
D.
none of the above

Your Answer: Option (Not Answered)

Correct Answer: Option C

Learn more problems on : Series-Parallel Circuits

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11.

If a Wheatstone bridge is balanced, a voltmeter in the center of the bridge will read:

A.
the same as the source voltage
B.
half the source voltage
C.
zero volts
D.
twice the source voltage

Your Answer: Option (Not Answered)

Correct Answer: Option C

Learn more problems on : Series-Parallel Circuits

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12.

The output voltage of a summing amplifier is proportional to the product of the input voltages.

A.
True
B.
False

Your Answer: Option (Not Answered)

Correct Answer: Option B

Learn more problems on : Basic Op-Amp Circuits

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13.

Typical isolation amplifiers use optical coupling.

A.
True
B.
False

Your Answer: Option (Not Answered)

Correct Answer: Option B

Learn more problems on : Special-Purpose Op-Amp Circuits

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14.

When applied input voltage varies the resistance of a channel, the result is called:

A.
saturization
B.
polarization
C.
cutoff
D.
field effect

Your Answer: Option (Not Answered)

Correct Answer: Option D

Learn more problems on : Field Effect Transistors (FET)

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15.

Capacitive reactance values connected in series offer

A.
an increase in total XC
B.
a decrease in total XC
C.
no change in total XC
D.
total opposition to voltage in the circuit

Your Answer: Option (Not Answered)

Correct Answer: Option A

Learn more problems on : Capacitors

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16.

The ratio between differential gain and common-mode gain is called:

A.
amplitude
B.
differential-mode rejection
C.
common-mode rejection
D.
phase

Your Answer: Option (Not Answered)

Correct Answer: Option C

Learn more problems on : Operational Amplifiers

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17.

If you increase the rotational speed of the conductor in a basic generator, the frequency of the resulting sine wave voltage will increase.

A.
True
B.
False

Your Answer: Option (Not Answered)

Correct Answer: Option A

Learn more problems on : Alternating Current and Voltage

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18.

The depletion-mode MOSFET

A.
can operate with only positive gate voltages
B.
can operate with only negative gate voltages
C.
cannot operate in the ohmic region
D.
can operate with positive as well as negative gate voltages

Your Answer: Option (Not Answered)

Correct Answer: Option D

Learn more problems on : Transistors and Applications

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19.

What is wrong, if anything, with this circuit?

A.
R1 is open.
B.
R1 is shorted.
C.
R2 is open.
D.
R2 is shorted.

Your Answer: Option (Not Answered)

Correct Answer: Option B

Learn more problems on : Series Circuits

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20.

Both the AND and OR arrays in a PAL are programmable.

A.
True
B.
False

Your Answer: Option (Not Answered)

Correct Answer: Option B

Learn more problems on : Programmable Logic Devices (PLD)

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