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.

It takes two memory locations (16 bits each) to store an address in the 8085 system.

A.
True
B.
False

Your Answer: Option (Not Answered)

Correct Answer: Option B

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2.

The rate of charge or discharge of a capacitor is based on ___ function.

A.
an exponential
B.
a linear
C.
a parabolic
D.
a trigonometric

Your Answer: Option (Not Answered)

Correct Answer: Option A

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3.

The term ______ is derived from a mathematical function in calculus.

A.
differentiator
B.
integrator
C.
filter
D.
voltage-divider

Your Answer: Option (Not Answered)

Correct Answer: Option B

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4.

(12.6 × 106)(10.5 × 103) = ________.

A.
13.2 × 1012
B.
1.32 × 1012
C.
1.32 × 1011
D.
13.2 × 1011

Your Answer: Option (Not Answered)

Correct Answer: Option C

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5.

A series circuit provides only one path for current between two points.

A.
True
B.
False

Your Answer: Option (Not Answered)

Correct Answer: Option A

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6.

The total resistance of a series circuit always depends on the highest value resistor in that circuit.

A.
True
B.
False

Your Answer: Option (Not Answered)

Correct Answer: Option B

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7.

What determines if resistor connections are in series, parallel, or series–parallel?

A.
the voltage source
B.
the power source
C.
resistance
D.
current flow

Your Answer: Option (Not Answered)

Correct Answer: Option D

Learn more problems on : Series-Parallel Circuits

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8.

The magnitude of the impedance in the given circuit is approximately 500 omega.gif.

A.
True
B.
False

Your Answer: Option (Not Answered)

Correct Answer: Option A

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9.

When a capacitor is used in place of a resistor in an op-amp network, its placement determines:

A.
open- or closed-loop gain
B.
integration or differentiation
C.
saturation or cutoff
D.
addition or subtraction

Your Answer: Option (Not Answered)

Correct Answer: Option B

Learn more problems on : Operational Amplifiers

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10.

The atomic number of an atom equals the number of electrons orbiting the nucleus.

A.
True
B.
False

Your Answer: Option (Not Answered)

Correct Answer: Option B

Explanation:

In chemistry and physics, the atomic number (also known as the proton number) is the number of protons found in the nucleus of an atom and therefore identical to the charge number of the nucleus.

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11.

A resistor and an output capacitor form a series circuit with a square wave applied. The circuit is:

A.
an integrator
B.
a differentiator
C.
a multiplier
D.
a divider

Your Answer: Option (Not Answered)

Correct Answer: Option A

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12.

When is a capacitor fully charged?

A.
when the voltage across its plates is of the voltage from ground to one of its plates
B.
when the current through the capacitor is the same as when the capacitor is discharged
C.
when the voltage across the plates is 0.707 of the input voltage
D.
when the current through the capacitor is directly proportional to the area of the plates

Your Answer: Option (Not Answered)

Correct Answer: Option B

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13.

Only electrical quantities have symbols associated with them.

A.
True
B.
False

Your Answer: Option (Not Answered)

Correct Answer: Option B

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14.

A magnetic circuit breaker will open to protect equipment only when:

A.
voltage is exceeded
B.
an open is in the equipment
C.
the equipment is operating properly
D.
current is exceeded

Your Answer: Option (Not Answered)

Correct Answer: Option D

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15.

What is the inductive reactance?

mcq8_1033_1.gif

A.
5.2 omega.gif
B.
7.5 omega.gif
C.
1.3 komega.gif
D.
7.5 komega.gif

Your Answer: Option (Not Answered)

Correct Answer: Option D

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16.

Which electronics material opposes the movement of free electrons?

A.
Conductor
B.
Insulator
C.
Semiconductor
D.
Element

Your Answer: Option (Not Answered)

Correct Answer: Option B

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17.

The ___ rating of a resistor will increase with an increase in the surface area of the resistor.

A.
resistance
B.
current
C.
power
D.
voltage

Your Answer: Option (Not Answered)

Correct Answer: Option C

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18.

An instrumentation amplifier has a high

A.
output impedance
B.
power gain
C.
CMRR
D.
supply voltage

Your Answer: Option (Not Answered)

Correct Answer: Option C

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

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19.

To operate correctly, starting a ring counter requires __________.

A.
clearing one flip-flop and presetting all the others
B.
clearing all the flip-flops
C.
presetting one flip-flop and clearing all the others
D.
presetting all the flip-flops

Your Answer: Option (Not Answered)

Correct Answer: Option C

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20.

Series components in a series–parallel circuit may be in series with other _______________ components, or with other _______________ components.

A.
individual, combinations of
B.
series, parallel
C.
parallel, series
D.
shunt, parallel

Your Answer: Option (Not Answered)

Correct Answer: Option A

Learn more problems on : Series-Parallel Circuits

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