1728 + Mcqs in Electronics Page 27 McqOptions

1301.	A potentiometer has how many leads?
A.	1
B.	2
C.	3
D.	4
Answer» D. 4

Discussion

1302.	What is the ratio of 13 to 47 expressed in percent?
A.	2.76%
B.	27.7%
C.	3.60%
D.	36.1%
Answer» C. 3.60%

Discussion

1303.	What happens to current and resistance if the voltage doubles?
A.	Current doubles and resistance doubles.
B.	Current doubles and resistance is halved.
C.	Current remains the same and resistance doubles.
D.	Current doubles and resistance remains the same.
Answer» E.

Discussion

1304.	How is a 3.9 k resistor color-coded?
A.	red, white, red, gold
B.	red, green, orange, silver
C.	orange, white, red, gold
D.	orange, green, orange, silver
Answer» D. orange, green, orange, silver

Discussion

1305.	What resistor type is found in SIPs and DIPs?
A.	metal film
B.	wirewound
C.	metal oxide
D.	thick film
Answer» E.

Discussion

1306.	Ohm's law is not:
A.	V = IR
B.	I = V/R
C.	R = IV
D.	R = V/I
Answer» D. R = V/I

Discussion

1307.	What are the two major categories for resistors?
A.	low and high ohmic value
B.	commercial and industrial
C.	low and high power value
D.	fixed and variable
Answer» E.

Discussion

1308.	How many connections does a potentiometer have?
A.	1
B.	2
C.	3
D.	4
Answer» D. 4

Discussion

1309.	The six basic forms of energy are:
A.	light, sun, magnetic, chemical, electrical, and mechanical
B.	electrical, mechanical, light, heat, magnetic, and chemical
C.	electrical, mechanical, sun, heat, chemical, and light
D.	potential, sun, light, chemical, electrical, and mechanical
Answer» C. electrical, mechanical, sun, heat, chemical, and light

Discussion

1310.	With Ohm's law:
A.	current is inversely proportional to resistance
B.	resistance is directly proportional to voltage
C.	voltage is indirectly proportional to power
D.	current is directly proportional to resistance
Answer» B. resistance is directly proportional to voltage

Discussion

1311.	Power is defined as:
A.	the rate at which energy is used
B.	watts
C.	energy
D.	the rate at which energy is generated
Answer» B. watts

Discussion

1312.	The charge carriers in a junction field effect transistor (JFET) will flow from source to drain in a p-channel and from drain to source in an n-channel.
A.	True
B.	False
Answer» C.

Discussion

1313.	What is the most commonly used conductor in electronics?
A.	aluminum
B.	copper
C.	gold
D.	silver
Answer» C. gold

Discussion

1314.	An isolation amplifier provides ac isolation between input and output.
A.	True
B.	False
Answer» C.

Discussion

1315.	The main purpose of an instrumentation amplifier is to amplify small signals riding on large common-mode voltages.
A.	True
B.	False
Answer» B. False

Discussion

1316.	One of the principal areas of application for an isolation amplifier is power plant instrumentation.
A.	True
B.	False
Answer» B. False

Discussion

1317.	In digital electronic circuits, information is first converted to a coded group of pulses.
A.	True
B.	False
Answer» B. False

Discussion

1318.	Digital systems using the 10-state system are more accurate than those using the two-state system.
A.	True
B.	False
Answer» C.

Discussion

1319.	The decimal code system used ten levels of voltage.
A.	True
B.	False
Answer» B. False

Discussion

1320.	Exclusive-OR (XOR) logic gates can be constructed from what other logic gates?
A.	OR gates only
B.	AND gates and NOT gates
C.	AND gates, OR gates, and NOT gates
D.	OR gates and NOT gates
Answer» D. OR gates and NOT gates

Discussion

1321.	What input values will cause an AND logic gate to produce a HIGH output?
A.	At least one input is HIGH.
B.	At least one input is LOW.
C.	All inputs are HIGH.
D.	All inputs are LOW.
Answer» D. All inputs are LOW.

Discussion

1322.	One advantage of voltage-divider bias is that the dependency of drain current, ID, on the range of Q points is _________.
A.	reduced
B.	increased
C.	not affected
D.	none of the above
Answer» B. increased

Discussion

1323.	Which formula shows a direct proportionality between power and voltage?
A.	V = IR
B.	P = VI
C.	P = IR
D.	I = V/R
Answer» C. P = IR

Discussion

1324.	A __________ change in VDS will produce a __________ change in ID.
A.	small, large
B.	large, small
C.	large, large
D.	small, small
Answer» C. large, large

Discussion

1325.	A _______________ JFET amplifier provides a voltage gain of less than one.
A.	common-source
B.	common-gate
C.	common-drain
D.	cascode amplifier
Answer» D. cascode amplifier

Discussion

1326.	With Ohm's law, if voltage increases and resistance stays the same:
A.	current remains the same
B.	power decreases
C.	current increases
D.	resistance decreases
Answer» D. resistance decreases

Discussion

1327.	When 1100010 is divided by 0101, what will be the decimal remainder?
A.	2
B.	3
C.	4
D.	6
Answer» C. 4

Discussion

1328.	With 1 mA of current, what wattage rating should a 470 ohm resistor have?
A.	1/4 watt
B.	1/2 watt
C.	1 watt
D.	2 watts
Answer» B. 1/2 watt

Discussion

1329.	The output will be a LOW for any case when one or more inputs are zero in a(n):
A.	OR gate
B.	NOT gate
C.	AND gate
D.	NAND gate
Answer» D. NAND gate

Discussion

1330.	A single transistor can be used to build which of the following digital logic gates?
A.	AND gates
B.	OR gates
C.	NOT gates
D.	NAND gates
Answer» D. NAND gates

Discussion

1331.	When a binary word is stored in a memory location of a ROM, the process is called burning in.
A.	True
B.	False
Answer» B. False

Discussion

1332.	Storage density is a term used to compare the memory storage ability of one device to that of another.
A.	True
B.	False
Answer» B. False

Discussion

1333.	A memory map is an address-listing diagram that shows the boundaries of the address space.
A.	True
B.	False
Answer» B. False

Discussion

1334.	The number that is a unique representation of the location of data is its address.
A.	True
B.	False
Answer» B. False

Discussion

1335.	PROMs are volatile.
A.	True
B.	False
Answer» C.

Discussion

1336.	How many NAND circuits are contained in a 7400 NAND IC?
A.	1
B.	2
C.	4
D.	8
Answer» D. 8

Discussion

1337.	The two basic types of signals are analog and:
A.	digilog
B.	digital
C.	vetilog
D.	sine wave
Answer» C. vetilog

Discussion

1338.	ASCII stands for:
A.	American Serial Communication Interface
B.	Additive Signal Coupling Interface
C.	American Standard Code for Information Interchange
D.	none of the above
Answer» D. none of the above

Discussion

1339.	Junction Field Effect Transistors (JFET) contain how many diodes?
A.	4
B.	3
C.	2
D.	1
Answer» D. 1

Discussion

1340.	The OR array in a PAL is ________.
A.	fixed
B.	programmable
C.	nonexistent; there is no OR array in a PAL
D.	floating
Answer» B. programmable

Discussion

1341.	A technique that can be used in multiple-digit numerical displays to control suppression or display of leading or trailing zeros in the display is called _________.
A.	advanced zero control
B.	time division multiplexing
C.	parity generation
D.	ripple blanking
Answer» E.

Discussion

1342.	Parity systems are defined as either_____ or _____ and will add an extra _____ to the digital information being transmitted.
A.	positive, negative, byte
B.	odd, even, bit
C.	upper, lower, digit
D.	on, off, decimal
Answer» C. upper, lower, digit

Discussion

1343.	A device that uses a binary decoder to direct a digital signal from a single source to one of several destinations is a ________.
A.	multiplexer
B.	demultiplexer
C.	encoder
D.	comparator
Answer» C. encoder

Discussion

1344.	A code in which each individual digit of a decimal number is represented by a 4-bit binary number is _________.
A.	binary coded decimal
B.	binary
C.	hexadecimal
D.	seven-segment code
Answer» B. binary

Discussion

1345.	The diodes in a seven-segment display where all cathodes are tied together and grounded are illuminated when a logic ____________________ is applied to the ____________________.
A.	LOW, anodes
B.	LOW, count down control line
C.	HIGH, anode
D.	HIGH, count up control line
Answer» D. HIGH, count up control line

Discussion

1346.	A multiplexer is a device that outputs a fixed sequence of binary states on each clock pulse.
A.	True
B.	False
Answer» C.

Discussion

1347.	The general function of a decoder is to activate one or more circuit outputs upon detection of a particular digital state.
A.	True
B.	False
Answer» B. False

Discussion

1348.	A nonvolatile type of memory that can be programmed and erased in sectors, rather than one byte at a time is:
A.	flash memory
B.	EPROM
C.	EEPROM
D.	MPROM
Answer» B. EPROM

Discussion

1349.	Select the best description of read-only memory (ROM).
A.	nonvolatile, used to store information that changes during system operation
B.	nonvolatile, used to store information that does not change during system operation
C.	volatile, used to store information that changes during system operation
D.	volatile, used to store information that does not change during system operation
Answer» C. volatile, used to store information that changes during system operation

Discussion

1350.	The binary data stored in an EEPROM is___________.
A.	volatile
B.	permanent
C.	refreshed
D.	erasable
Answer» E.

Discussion

Explore topic-wise MCQs in Engineering.

A potentiometer has how many leads?

What is the ratio of 13 to 47 expressed in percent?

What happens to current and resistance if the voltage doubles?

How is a 3.9 k resistor color-coded?

What resistor type is found in SIPs and DIPs?

Ohm's law is not:

What are the two major categories for resistors?

How many connections does a potentiometer have?

The six basic forms of energy are:

With Ohm's law:

Power is defined as:

The charge carriers in a junction field effect transistor (JFET) will flow from source to drain in a p-channel and from drain to source in an n-channel.

What is the most commonly used conductor in electronics?

An isolation amplifier provides ac isolation between input and output.

The main purpose of an instrumentation amplifier is to amplify small signals riding on large common-mode voltages.

One of the principal areas of application for an isolation amplifier is power plant instrumentation.

In digital electronic circuits, information is first converted to a coded group of pulses.

Digital systems using the 10-state system are more accurate than those using the two-state system.

The decimal code system used ten levels of voltage.

Exclusive-OR (XOR) logic gates can be constructed from what other logic gates?

What input values will cause an AND logic gate to produce a HIGH output?

One advantage of voltage-divider bias is that the dependency of drain current, ID, on the range of Q points is _________.

Which formula shows a direct proportionality between power and voltage?

A __________ change in VDS will produce a __________ change in ID.

A _______________ JFET amplifier provides a voltage gain of less than one.

With Ohm's law, if voltage increases and resistance stays the same:

When 1100010 is divided by 0101, what will be the decimal remainder?

With 1 mA of current, what wattage rating should a 470 ohm resistor have?

The output will be a LOW for any case when one or more inputs are zero in a(n):

A single transistor can be used to build which of the following digital logic gates?

When a binary word is stored in a memory location of a ROM, the process is called burning in.

Storage density is a term used to compare the memory storage ability of one device to that of another.

A memory map is an address-listing diagram that shows the boundaries of the address space.

The number that is a unique representation of the location of data is its address.

PROMs are volatile.

How many NAND circuits are contained in a 7400 NAND IC?

The two basic types of signals are analog and:

ASCII stands for:

Junction Field Effect Transistors (JFET) contain how many diodes?

The OR array in a PAL is ________.

A technique that can be used in multiple-digit numerical displays to control suppression or display of leading or trailing zeros in the display is called _________.

Parity systems are defined as either_____ or _____ and will add an extra _____ to the digital information being transmitted.

A device that uses a binary decoder to direct a digital signal from a single source to one of several destinations is a ________.

A code in which each individual digit of a decimal number is represented by a 4-bit binary number is _________.

The diodes in a seven-segment display where all cathodes are tied together and grounded are illuminated when a logic ____________________ is applied to the ____________________.

A multiplexer is a device that outputs a fixed sequence of binary states on each clock pulse.

The general function of a decoder is to activate one or more circuit outputs upon detection of a particular digital state.

A nonvolatile type of memory that can be programmed and erased in sectors, rather than one byte at a time is:

Select the best description of read-only memory (ROM).

The binary data stored in an EEPROM is___________.

A change in VDS will produce a change in ID.

Parity systems are defined as either___ or _ and will add an extra ___ to the digital information being transmitted.

The diodes in a seven-segment display where all cathodes are tied together and grounded are illuminated when a logic is applied to the .