

MCQOPTIONS
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 |
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. | 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. | |