1728 + Mcqs in Electronics Page 15 McqOptions

701.	Which electronics material opposes the movement of free electrons?
A.	Conductor
B.	Insulator
C.	Semiconductor
D.	Element
Answer» C. Semiconductor

Discussion

702.	The digits in a measured number that are known to be correct are called
A.	accuracy digits
B.	significant digits
C.	error digits
D.	precision digits
Answer» C. error digits

Discussion

703.	The unit for frequency is the
A.	hertz
B.	ampere
C.	watt
D.	second
Answer» B. ampere

Discussion

704.	Add 21 mA and 8000 A and express the result in milliamperes.
A.	21.8 mA
B.	218 mA
C.	29 mA
D.	290 mA
Answer» D. 290 mA

Discussion

705.	A measure of the repeatability of a measurement of some quantity is
A.	error
B.	precision
C.	accuracy
D.	significant
Answer» C. accuracy

Discussion

706.	What is a characteristic of a secondary cell?
A.	rechargeability
B.	not rechargeable
C.	a dry cell
D.	non-liquid
Answer» B. not rechargeable

Discussion

707.	What are the basic building blocks that all matter is composed of?
A.	electrons, neutrons, and protons
B.	two protons for each neutron
C.	two protons for each electron
D.	electrons, neutrons, and charged ions
Answer» B. two protons for each neutron

Discussion

708.	If a fluid system is compared to an electrical system, the fluid pump will correspond to a:
A.	conductor
B.	lamp
C.	battery
D.	insulator
Answer» D. insulator

Discussion

709.	An element is a substance that is:
A.	varied throughout the entire piece
B.	used only in electronics
C.	electrically charged
D.	found only in its pure form
Answer» E.

Discussion

710.	Current is:
A.	the presence of a positive charge
B.	the abundance of electrons
C.	the movement of electrons
D.	the repulsion of electrons
Answer» D. the repulsion of electrons

Discussion

711.	Another name for "fundamental units" is
A.	base units
B.	atoms
C.	the metric system
D.	letter symbols
Answer» B. atoms

Discussion

712.	When using the terms "accuracy" and "precision" for measurements
A.	"precision" implies less measurement error than "accuracy"
B.	"accuracy" implies less measurement error than "precision"
C.	"precision" measures the repeatability of a measurement
D.	both terms mean the same thing
Answer» D. both terms mean the same thing

Discussion

713.	The difference between scientific and engineering notation is
A.	powers of ten representation
B.	single vs. multiple digits before decimal point
C.	groupings of multiples of three digits
D.	All of the above
Answer» E.

Discussion

714.	The gate-source junction of a JFET must be ________ for proper linear operation.
A.	forward-biased
B.	reverse-biased
C.	either forward-biased or reverse-biased
D.	neutral
Answer» C. either forward-biased or reverse-biased

Discussion

715.	Since microprocessor CPUs do not understand mnemonics as they are, they have to be converted into __________.
A.	hexadecimal machine code
B.	high-level language
C.	assembly language
D.	hexadecimal machine code and assembly language
Answer» B. high-level language

Discussion

716.	A program that contains nothing but strings of zeros and ones is called a(n) ________.
A.	machine language program
B.	assembly language program
C.	interpreted program
D.	binary language program
Answer» B. assembly language program

Discussion

717.	The register in the 8085 microprocessor that is used to keep track of the memory address of the next opcode to be run in the program is the ________.
A.	stack pointer
B.	program counter
C.	instruction pointer
D.	accumulator
Answer» C. instruction pointer

Discussion

718.	The first part of a machine language instruction that specifies the operation to be performed is called a(n) __________.
A.	mnemonic
B.	opcode
C.	interrupt
D.	instruction cycle
Answer» C. interrupt

Discussion

719.	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
Answer» C.

Discussion

720.	An address bus is also called a unidirectional bus.
A.	True
B.	False
Answer» B. False

Discussion

721.	To keep the number of IC pins to a minimum, the 8085 uses a multiplexed bus.
A.	True
B.	False
Answer» B. False

Discussion

722.	When analyzing series parallel circuit currents, you should start with the current in the branch farthest from the source.
A.	True
B.	False
Answer» C.

Discussion

723.	The power dissipated by R4 is 211 mW.
A.	True
B.	False
Answer» B. False

Discussion

724.	The total resistance in the circuit is 1.6 k.
A.	True
B.	False
Answer» B. False

Discussion

725.	The current through R1 is 17 mA.
A.	True
B.	False
Answer» B. False

Discussion

726.	Derived units are obtained from various combinations of
A.	electrical quantities
B.	fundamental units
C.	metric prefixes
D.	international standards
Answer» C. metric prefixes

Discussion

727.	Which of the following metric prefixes could replace 10 9?
A.	Nano
B.	Mega
C.	Kilo
D.	Micro
Answer» B. Mega

Discussion

728.	Scientific notation is a method
A.	of expressing a very large number
B.	of expressing a very small number
C.	used to make calculations with large and small numbers
D.	All of the above
Answer» E.

Discussion

729.	If you drop a 5 when rounding a number, you are using the
A.	round-to-even rule
B.	significant digit rule
C.	round-off rule
D.	retained digit rule
Answer» B. significant digit rule

Discussion

730.	What is the bandwidth of the circuit?
A.	31.8 Hz
B.	32.3 Hz
C.	142 Hz
D.	7.2 kHz
Answer» B. 32.3 Hz

Discussion

731.	In a parallel RLC circuit, which value may always be used as a vector reference?
A.	current
B.	reactance
C.	resistance
D.	voltage
Answer» E.

Discussion

732.	A register in the microprocessor that keeps track of the answer or results of any arithmetic or logic operation is the _________.
A.	stack pointer
B.	program counter
C.	instruction pointer
D.	accumulator
Answer» E.

Discussion

733.	The __________ program is used to convert mnemonic code to machine code.
A.	debug
B.	C++
C.	fortran
D.	assembler
Answer» E.

Discussion

734.	A(n) ________________ is the time it takes a microprocessor to fetch and execute a complete instruction.
A.	instruction cycle
B.	machine cycle
C.	timing cycle
D.	write cycle
Answer» B. machine cycle

Discussion

735.	The ________ is the "brains" of every microcomputer.
A.	ROM
B.	ALU
C.	CPU
D.	MPU
Answer» D. MPU

Discussion

736.	The circuits in the 8085 that provide the arithmetic and logic functions are called the __________.
A.	CPU
B.	ALU
C.	I/O
D.	bus decoder
Answer» C. I/O

Discussion

737.	It takes two memory locations (16 bits each) to store an address in the 8085 system.
A.	True
B.	False
Answer» C.

Discussion

738.	A compiler is a translation program that converts high-level instructions into a set of binary instructions (machine code) for execution.
A.	True
B.	False
Answer» B. False

Discussion

739.	The language understood by the microprocessor is called assembly language.
A.	True
B.	False
Answer» C.

Discussion

740.	A machine cycle is the time it takes a microprocessor to fetch and execute a complete instruction.
A.	True
B.	False
Answer» C.

Discussion

741.	In the given circuit, the Thevenin voltage equals 6 V.
A.	True
B.	False
Answer» B. False

Discussion

742.	The voltage across R3 is 20 volts.
A.	True
B.	False
Answer» C.

Discussion

743.	The voltage across R1 is 175 volts.
A.	True
B.	False
Answer» B. False

Discussion

744.	In the given circuit, the Thevenin resistance equals 800 .
A.	True
B.	False
Answer» C.

Discussion

745.	The voltmeter will read 18 volts.
A.	True
B.	False
Answer» B. False

Discussion

746.	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
Answer» B. False

Discussion

747.	The magnitude of an alternation that varies from zero is called its _______.
A.	altitude
B.	polarity
C.	attitude
D.	amplitude
Answer» E.

Discussion

748.	What is the bandwidth in the given circuit. If the winding resistance of the coil is 12 ?
A.	6.4 kHz
B.	47.2 kHz
C.	53.7 kHz
D.	60.2 kHz
Answer» B. 47.2 kHz

Discussion

749.	If the bandwidth of a filter increases:
A.	Q decreases
B.	the roll-off rate increases
C.	the half-power frequency decreases
D.	the center frequency decreases
Answer» B. the roll-off rate increases

Discussion

750.	Series RLC impedance or voltage totals must always be calculated by
A.	adding values vectorially
B.	graphing the angles
C.	multiplying the values
D.	subtracting the values
Answer» B. graphing the angles

Discussion

Explore topic-wise MCQs in Engineering.

Which electronics material opposes the movement of free electrons?

The digits in a measured number that are known to be correct are called

The unit for frequency is the

Add 21 mA and 8000 A and express the result in milliamperes.

A measure of the repeatability of a measurement of some quantity is

What is a characteristic of a secondary cell?

What are the basic building blocks that all matter is composed of?

If a fluid system is compared to an electrical system, the fluid pump will correspond to a:

An element is a substance that is:

Current is:

Another name for "fundamental units" is

When using the terms "accuracy" and "precision" for measurements

The difference between scientific and engineering notation is

The gate-source junction of a JFET must be ________ for proper linear operation.

Since microprocessor CPUs do not understand mnemonics as they are, they have to be converted into __________.

A program that contains nothing but strings of zeros and ones is called a(n) ________.

The register in the 8085 microprocessor that is used to keep track of the memory address of the next opcode to be run in the program is the ________.

The first part of a machine language instruction that specifies the operation to be performed is called a(n) __________.

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

An address bus is also called a unidirectional bus.

To keep the number of IC pins to a minimum, the 8085 uses a multiplexed bus.

When analyzing series parallel circuit currents, you should start with the current in the branch farthest from the source.

The power dissipated by R4 is 211 mW.

The total resistance in the circuit is 1.6 k.

The current through R1 is 17 mA.

Derived units are obtained from various combinations of

Which of the following metric prefixes could replace 10 9?

Scientific notation is a method

If you drop a 5 when rounding a number, you are using the

What is the bandwidth of the circuit?

In a parallel RLC circuit, which value may always be used as a vector reference?

A register in the microprocessor that keeps track of the answer or results of any arithmetic or logic operation is the _________.

The __________ program is used to convert mnemonic code to machine code.

A(n) ________________ is the time it takes a microprocessor to fetch and execute a complete instruction.

The ________ is the "brains" of every microcomputer.

The circuits in the 8085 that provide the arithmetic and logic functions are called the __________.

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

A compiler is a translation program that converts high-level instructions into a set of binary instructions (machine code) for execution.

The language understood by the microprocessor is called assembly language.

A machine cycle is the time it takes a microprocessor to fetch and execute a complete instruction.

In the given circuit, the Thevenin voltage equals 6 V.

The voltage across R3 is 20 volts.

The voltage across R1 is 175 volts.

In the given circuit, the Thevenin resistance equals 800 .

The voltmeter will read 18 volts.

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

The magnitude of an alternation that varies from zero is called its _______.

What is the bandwidth in the given circuit. If the winding resistance of the coil is 12 ?

If the bandwidth of a filter increases:

Series RLC impedance or voltage totals must always be calculated by