Explore topic-wise MCQs in Engineering.

This section includes 2291 Mcqs, each offering curated multiple-choice questions to sharpen your Engineering knowledge and support exam preparation. Choose a topic below to get started.

1701.

The primary disadvantage of the flash A/D converter is the large number of comparators required.

A. True
B. False
Answer» B. False
1702.

A data acquisition system may communicate via two common buses: the data bus and the control bus.

A. True
B. False
Answer» B. False
1703.

Flash A/D converters depend on an input clock pulse to perform each conversion.

A. True
B. False
Answer» C.
1704.

Resolution in the analog output of a DAC is primarily dependent on the number of input binary bits.

A. True
B. False
Answer» B. False
1705.

If the least significant bit (LSB) of a four-bit binary-weighted resistor D/A converter connects to a 200 resistor, then the resistor needed for the next bit is 100 .

A. True
B. False
Answer» B. False
1706.

A summing op-amp can be used for DAC.

A. True
B. False
Answer» B. False
1707.

The time required to complete a conversion cycle is called conversion time.

A. True
B. False
Answer» B. False
1708.

Electrical quantities can be interpreted without conditioning by a digital computer.

A. True
B. False
Answer» C.
1709.

Linearity error is the maximum deviation in step size from the ideal step size.

A. True
B. False
Answer» B. False
1710.

When four 1s are taken as a group on a Karnaugh map, the number of variables eliminated from the output expression is ________.

A. 1
B. 2
C. 3
D. 4
Answer» C. 3
1711.

In Boolean algebra, the word "literal" means ________.

A. a product term
B. all the variables in a Boolean expression
C. the inverse function
D. a variable or its complement
Answer» E.
1712.

The amount of deviation of the measured step size from the ideal step size is a measure of linearity.

A. True
B. False
Answer» B. False
1713.

When analog inputs from several sources are to be converted, a multiplexing technique can be used so that one ADC may be time-shared.

A. True
B. False
Answer» B. False
1714.

An AD7524 is an eight-bit D/A converter that uses an R/2R ladder network.

A. True
B. False
Answer» B. False
1715.

Voltage-to-frequency ADC is more complicated than other ADCs.

A. True
B. False
Answer» C.
1716.

A digital voltmeter converts an analog voltage to its ________ representation.

A. BCD-code
B. decimal
C. digital
D. alias
Answer» B. decimal
1717.

________ ADCs have a fixed value of conversion time that is not dependent on the value of the analog input.

A. Substandard
B. Dual
C. Recessive-approximation
D. Successive-approximation
Answer» E.
1718.

The DSO ________, ________, and ________ analog waveforms.

A. filters, conditions, sends
B. levels, stores, weighs
C. sends, receives, translates
D. digitizes, stores, displays
Answer» D. digitizes, stores, displays
1719.

A signal ________ is produced by sampling the signal at a rate less than the minimum rate identified by Nyquist.

A. Nyquist
B. sampling frequency
C. basis
D. alias
Answer» E.
1720.

For each bit that is added to a digital ramp ADC, the conversion time ________.

A. doubles
B. triples
C. decreases by one-third
D. decreases by one-half
Answer» B. triples
1721.

________ DACs produce both positive and negative output values.

A. Tristate
B. Double
C. Bipolar
D. Unilateral
Answer» D. Unilateral
1722.

A counter-ramp ADC uses a comparator to compare the input voltage with ________.

A. a binary number
B. the output of a counter
C. the output of a DAC
D. a voltage divider network
Answer» D. a voltage divider network
1723.

The number of binary bits at the input of a DAC or the output of an ADC is known as ________.

A. accuracy
B. linearity
C. resolution
D. monotonicity
Answer» D. monotonicity
1724.

A simultaneous A/D converter is also known as a(n) ________ A/D converter.

A. flash
B. synchronous
C. comparator
D. asynchronous
Answer» B. synchronous
1725.

The figure given below represents a ________.

A. successive-approximation A/D converter
B. dual-slope A/D converter
C. tracking A/D converter
D. dual-approximation D/A comparator
Answer» B. dual-slope A/D converter
1726.

The primary disadvantage of the simultaneous A/D converter is ________.

A. that it requires the input voltage to be applied to the inputs simultaneously
B. the long conversion time required
C. the large number of output lines required to simultaneously decode the input voltage
D. the large number of comparators required to represent a reasonable-sized binary number
Answer» E.
1727.

The input of an analog-to-digital converter is ________.

A. a voltage level
B. a clock pulse
C. a binary number
D. any of the above
Answer» B. a clock pulse
1728.

Two characteristics of ideal operational amplifiers are very high input impedance and very high voltage gain.

A. True
B. False
Answer» B. False
1729.

A major drawback in using ECL logic circuits in conjunction with TTL and MOS circuits is its negative supply voltages and logic levels.

A. True
B. False
Answer» B. False
1730.

Due to the extremely low power requirements of CMOS logic circuits, any number of CMOS and TTL gates can be interconnected.

A. True
B. False
Answer» C.
1731.

The maximum current for a LOW output on a standard TTL gate is 100 A.

A. True
B. False
Answer» C.
1732.

Power-supply decoupling uses a radio-frequency capacitor to short out high frequency spikes.

A. True
B. False
Answer» B. False
1733.

Integrated injection logic offers high component density and is easier to fabricate than TTL.

A. True
B. False
Answer» B. False
1734.

The noise immunity of a logic circuit refers to the circuit's ability to tolerate noise by causing spurious charges in the output voltage.

A. True
B. False
Answer» C.
1735.

The time it takes for a square wave to go from 10% to 90% of its voltage level is called propagation delay.

A. True
B. False
Answer» C.
1736.

When the outputs of several standard TTL gates are connected together, the gate outputs produce more fan-out.

A. True
B. False
Answer» C.
1737.

A common means for measuring and comparing the overall performance of an IC family is the speed-power product.

A. True
B. False
Answer» B. False
1738.

A 4-bit stairstep-ramp A/D converter has a clock frequency of 100 kHz and a maximum input of 10 V, and has 6 V applied to the input. The conversion time will be ________.

A. 10 microseconds
B. 160 microseconds
C. 90 microseconds
D. 6250 seconds
Answer» D. 6250 seconds
1739.

A major application for DSP is in ________ and ________ of analog signals.

A. sending, receiving
B. digitizing, weighting
C. filtering, conditioning
D. leveling, translating
Answer» D. leveling, translating
1740.

The fastest analog-to-digital converter is the ________.

A. counter ADC
B. successive-approximation ADC
C. dual slope ADC
D. parallel ADC
Answer» E.
1741.

The main advantage of the tracking A/D converter over the stairstep-ramp A/D converter is that ________.

A. it does not require a counter
B. it uses an up/down counter to indicate the polarity of the input voltage
C. it uses an up/down counter to measure both positive and negative voltages
D. it is faster
Answer» E.
1742.

A DAC is ________ if its output increases as the binary input increments from one value to the next.

A. monotonic
B. self adjusting
C. accurate
D. broken
Answer» B. self adjusting
1743.

A counter-ramp ADC stops counting when ________.

A. the input voltage equals the DAC staircase voltage
B. the counter reaches a maximum count
C. the input voltage equals 5 volts
D. the DAC staircase voltage equals 5 volts
Answer» B. the counter reaches a maximum count
1744.

A(n) ________ converts an analog input to a digital output.

A. ADC
B. DAC
C. flash converter
D. bipolar converter
Answer» B. DAC
1745.

It is possible to develop more than 16 different analog levels using 4-bit resolution.

A. True
B. False
Answer» C.
1746.

A simultaneous, multiple comparator, or flash converter uses parallel encoding.

A. True
B. False
Answer» B. False
1747.

A DAC is monotonic if its output increases as its binary input is incremented from one value to the next.

A. True
B. False
Answer» B. False
1748.

An operational amplifier is used as a comparator.

A. True
B. False
Answer» B. False
1749.

By applying De Morgan's theorem to a NOR gate, two identical truth tables can be produced.

A. True
B. False
Answer» B. False
1750.

Five-variable Karnaugh maps are impossible.

A. True
B. False
Answer» C.