1728 + Mcqs in Electronics Page 13 McqOptions

601.	If one branch shorts out in a parallel circuit, the other branches are not affected.
A.	True
B.	False
Answer» C.

Discussion

602.	If one of the resistors opens in a parallel circuit branch, the total resistance of the circuit will decrease.
A.	True
B.	False
Answer» C.

Discussion

603.	The total current entering a junction may be different from the total current leaving the junction.
A.	True
B.	False
Answer» C.

Discussion

604.	Kirchhoff's current law states that the current flowing into a point of a circuit is equal to the sum of the voltages in the output branches.
A.	True
B.	False
Answer» C.

Discussion

605.	The voltages across all components in parallel are equal.
A.	True
B.	False
Answer» B. False

Discussion

606.	The total resistance in a parallel circuit is always greater than the lowest-value branch resistor.
A.	True
B.	False
Answer» C.

Discussion

607.	A parallel circuit is sometimes called a current divider.
A.	True
B.	False
Answer» B. False

Discussion

608.	The total resistance of a parallel circuit is always greater than the largest resistor value.
A.	True
B.	False
Answer» C.

Discussion

609.	One coulomb of charge passing a point in one second is one ampere of current.
A.	True
B.	False
Answer» B. False

Discussion

610.	The unit of measurement for conductance is the coulomb.
A.	True
B.	False
Answer» C.

Discussion

611.	An electron is the smallest subatomic particle of negative charge that orbits the nucleus of the atom.
A.	True
B.	False
Answer» B. False

Discussion

612.	A multimeter measures only voltage.
A.	True
B.	False
Answer» C.

Discussion

613.	The voltage read by the voltmeter will be:
A.	24 V
B.	12 V
C.	6 V
D.	4 V
Answer» C. 6 V

Discussion

614.	Which component is of the wrong value?
A.	R1
B.	R2
C.	R3
D.	R4
Answer» B. R2

Discussion

615.	What does I3 equal in the given circuit?
A.	5 mA
B.	45 mA
C.	50 mA
D.	100 mA
Answer» B. 45 mA

Discussion

616.	What is the total power of the circuit?
A.	2.2 W
B.	4.2 W
C.	6.2 W
D.	8.2 W
Answer» C. 6.2 W

Discussion

617.	The total current in the given circuit equals _____.
A.	86 mA
B.	170 mA
C.	42 mA
D.	128 mA
Answer» C. 42 mA

Discussion

618.	As additional resistors are connected to a parallel circuit, the total resistance will ___.
A.	increase
B.	increase by the value of the resistor being connected
C.	decrease
D.	remain unchanged
Answer» D. remain unchanged

Discussion

619.	An ammeter is connected in ______ with the branch resistor to measure branch current, and in ______ with the voltage supply to measure total parallel circuit current.
A.	parallel, series
B.	series, parallel
C.	series, series
D.	parallel, parallel
Answer» D. parallel, parallel

Discussion

620.	The total current in the given circuit is ___.
A.	2.5 mA
B.	0.6 mA
C.	1.5 mA
D.	0.4 mA
Answer» B. 0.6 mA

Discussion

621.	The total resistance in a parallel circuit is always less than the least resistor.
A.	True
B.	False
Answer» B. False

Discussion

622.	If a branch opens in a parallel circuit, the current in the remaining parallel paths will change.
A.	True
B.	False
Answer» B. False

Discussion

623.	If a branch opens in a parallel circuit, the total circuit resistance decreases.
A.	True
B.	False
Answer» C.

Discussion

624.	The largest branch resistance in a parallel circuit carries the largest branch current.
A.	True
B.	False
Answer» C.

Discussion

625.	If two equal resistors are connected in parallel, they will carry identical currents.
A.	True
B.	False
Answer» B. False

Discussion

626.	What is the average voltage when a rectangular wave's base line voltage is 20 V, its peak-to-peak voltage is 50 V, and its duty cycle is 20%?
A.	26 V
B.	30 V
C.	40 V
D.	45 V
Answer» C. 40 V

Discussion

627.	What is the fourth harmonic of a fundamental frequency of 400 Hz?
A.	100 Hz
B.	4 kHz
C.	4 Hz
D.	1.6 kHz
Answer» E.

Discussion

628.	What is the peak voltage across R3 in the given circuit?
A.	1.2 V
B.	5 V
C.	7 V
D.	12 V
Answer» C. 7 V

Discussion

629.	Which point is the trailing edge of the repetitive pulse waveform in the given circuit?
A.	Point A
B.	Point B
C.	Point C
D.	Point D
Answer» B. Point B

Discussion

630.	A single-phase induction motor
A.	is self-starting
B.	operates at a fixed speed
C.	is less reliable than a three-phase synchronous motor
D.	none of the above
Answer» E.

Discussion

631.	What is the instantaneous peak voltage at 250 on a 6 V peak sine wave?
A.	+5.64 V
B.	5.64 V
C.	+26.13 V
D.	26.13 V
Answer» C. +26.13 V

Discussion

632.	Calculate the positive-going slope of the waveform in the given circuit.
A.	5 V/ms
B.	2.5 V/ms
C.	2.5 V/s
D.	5 V/s
Answer» C. 2.5 V/s

Discussion

633.	A rectangular wave that has a duty cycle of 50% could be called a
A.	"c" wave
B.	sawtooth wave
C.	square wave
D.	triangular wave
Answer» D. triangular wave

Discussion

634.	Calculate the duty cycle of the repetitive pulse waveform in the given circuit.
A.	8.33%
B.	0%
C.	33.33%
D.	25%
Answer» E.

Discussion

635.	The effective value of a sine wave is equal to
A.	0.707 of peak voltage
B.	0.636 of peak voltage
C.	sin 45 of peak voltage
D.	both 0.707 of peak voltage and sin 45 of peak voltage
Answer» E.

Discussion

636.	What is the dc voltage of the waveform in the given circuit?
A.	2 V
B.	4 V
C.	6 V
D.	8 V
Answer» D. 8 V

Discussion

637.	What are the individual values of two parallel resistors whose RT is 8 ohms, when one has double the resistance of the other?
A.	2.7 ohms and 5.3 ohms
B.	8 ohms and 16 ohms
C.	10 ohms and 20 ohms
D.	12 ohms and 24 ohms
Answer» E.

Discussion

638.	In the given circuit, Channel 1 of the stereo amplifier outputs 12 V to the speakers. How much total power is the amplifier delivering to the speakers?
A.	0 W
B.	18 W
C.	36 W
D.	More information is needed to find the total power delivered to the speakers.
Answer» D. More information is needed to find the total power delivered to the speakers.

Discussion

639.	The current through R1 will be:
A.	128 mA
B.	88 mA
C.	48 mA
D.	2.2 mA
Answer» D. 2.2 mA

Discussion

640.	A parallel circuit differs from a series circuit in that a parallel circuit has
A.	no path for current flow
B.	fewer paths for current flow
C.	one path for current flow
D.	more than one path for current flow
Answer» E.

Discussion

641.	In the given circuit, Channel 1 of the stereo amplifier outputs 12 V to the speakers. How much total current is the amplifier providing to the speakers?
A.	0 A
B.	1.5 A
C.	3 A
D.	More information is needed to find the total current provided to the speakers.
Answer» D. More information is needed to find the total current provided to the speakers.

Discussion

642.	If two parallel-connected resistors dissipate 6 watts and 10 watts of power, then what is the total power loss?
A.	3.75 watts
B.	4 watts
C.	16 watts
D.	60 watts
Answer» D. 60 watts

Discussion

643.	Which component is shorted?
A.	R1
B.	R2
C.	R3
D.	R4
Answer» E.

Discussion

644.	The battery symbol is:
A.	<img src="/_files/images/basic-electronics/complete/mca1_1009a1.gif" alt="mca1_1009a1.gif">
B.	<img src="/_files/images/basic-electronics/complete/mca1_1009b1.gif" alt="mca1_1009b1.gif">
C.	<img src="/_files/images/basic-electronics/complete/mca1_1009c1.gif" alt="mca1_1009c1.gif">
D.	<img src="/_files/images/basic-electronics/complete/mca1_1009d1.gif" alt="mca1_1009d1.gif">
Answer» C. <img src="/_files/images/basic-electronics/complete/mca1_1009c1.gif" alt="mca1_1009c1.gif">

Discussion

645.	What type of switch is this?
A.	push button
B.	SPST
C.	DPDT
D.	SPDT
Answer» E.

Discussion

646.	Primary batteries, unlike secondary batteries, may be:
A.	charged once
B.	used once
C.	recharged over and over
D.	stored indefinitely
Answer» C. recharged over and over

Discussion

647.	In practical applications, battery voltage:
A.	is restored as soon as disconnect occurs
B.	is lowered as the load increases
C.	may be stored indefinitely
D.	will be reduced to zero as power is drawn
Answer» C. may be stored indefinitely

Discussion

648.	The shell that is closest to the nucleus of an atom can contain a maximum of two electrons.
A.	True
B.	False
Answer» B. False

Discussion

649.	Components that connect in parallel form:
A.	branches
B.	open circuits
C.	short circuits
D.	a voltage divider
Answer» B. open circuits

Discussion

650.	The negative and positive charge symbols are assigned (in that order) to the:
A.	proton and electron
B.	electron and proton
C.	atom and nucleus
D.	electron and element
Answer» C. atom and nucleus

Discussion

Explore topic-wise MCQs in Engineering.

If one branch shorts out in a parallel circuit, the other branches are not affected.

If one of the resistors opens in a parallel circuit branch, the total resistance of the circuit will decrease.

The total current entering a junction may be different from the total current leaving the junction.

Kirchhoff's current law states that the current flowing into a point of a circuit is equal to the sum of the voltages in the output branches.

The voltages across all components in parallel are equal.

The total resistance in a parallel circuit is always greater than the lowest-value branch resistor.

A parallel circuit is sometimes called a current divider.

The total resistance of a parallel circuit is always greater than the largest resistor value.

One coulomb of charge passing a point in one second is one ampere of current.

The unit of measurement for conductance is the coulomb.

An electron is the smallest subatomic particle of negative charge that orbits the nucleus of the atom.

A multimeter measures only voltage.

The voltage read by the voltmeter will be:

Which component is of the wrong value?

What does I3 equal in the given circuit?

What is the total power of the circuit?

The total current in the given circuit equals _____.

As additional resistors are connected to a parallel circuit, the total resistance will ___.

An ammeter is connected in ______ with the branch resistor to measure branch current, and in ______ with the voltage supply to measure total parallel circuit current.

The total current in the given circuit is ___.

The total resistance in a parallel circuit is always less than the least resistor.

If a branch opens in a parallel circuit, the current in the remaining parallel paths will change.

If a branch opens in a parallel circuit, the total circuit resistance decreases.

The largest branch resistance in a parallel circuit carries the largest branch current.

If two equal resistors are connected in parallel, they will carry identical currents.

What is the average voltage when a rectangular wave's base line voltage is 20 V, its peak-to-peak voltage is 50 V, and its duty cycle is 20%?

What is the fourth harmonic of a fundamental frequency of 400 Hz?

What is the peak voltage across R3 in the given circuit?

Which point is the trailing edge of the repetitive pulse waveform in the given circuit?

A single-phase induction motor

What is the instantaneous peak voltage at 250 on a 6 V peak sine wave?

Calculate the positive-going slope of the waveform in the given circuit.

A rectangular wave that has a duty cycle of 50% could be called a

Calculate the duty cycle of the repetitive pulse waveform in the given circuit.

The effective value of a sine wave is equal to

What is the dc voltage of the waveform in the given circuit?

What are the individual values of two parallel resistors whose RT is 8 ohms, when one has double the resistance of the other?

In the given circuit, Channel 1 of the stereo amplifier outputs 12 V to the speakers. How much total power is the amplifier delivering to the speakers?

The current through R1 will be:

A parallel circuit differs from a series circuit in that a parallel circuit has

In the given circuit, Channel 1 of the stereo amplifier outputs 12 V to the speakers. How much total current is the amplifier providing to the speakers?

If two parallel-connected resistors dissipate 6 watts and 10 watts of power, then what is the total power loss?

Which component is shorted?

The battery symbol is:

What type of switch is this?

Primary batteries, unlike secondary batteries, may be:

In practical applications, battery voltage:

The shell that is closest to the nucleus of an atom can contain a maximum of two electrons.

Components that connect in parallel form:

The negative and positive charge symbols are assigned (in that order) to the:

An ammeter is connected in with the branch resistor to measure branch current, and in with the voltage supply to measure total parallel circuit current.