Electrical Engineering MCQs

Page No. 28

In case of OR gate, no matter what the number of inputs, a____________________?


a1 at any input causes the output to be at logic 1


b1 at any input causes the output to be at logic 0


c0 any input causes the output to be at logic 0


d0 at any input causes the output to be at logic 1



A debouncing circuit is________________?


aan astable MV


b a bistable MV


c a latch


da monostable MV


View Answer a latch

An AND gate will function as OR if________________?


aall the inputs to the gates are “1”


ball the inputs are ‘0’


ceither of the inputs is “1”


dall the inputs and outputs are complemented



NAND gates are preferred over others because these__________________?


ahave lower fabrication area


bcan be used to make any gate


cconsume least electronic power


dprovide maximum density in a chip



An OR gate has 6 inputs. The number of input words in its truth table are________________?


a 6


b32


c64


d128


View Answer 64

Among the logic families, the family which can be used at very high frequency greater than 100 MHz in a 4 bit synchronous counter is__________________?


aTTLAS


bCMOS


cECL


dTTLLS


View Answer ECL

Positive logic in a logic circuit is one in which______________?


alogic 0 and 1 are represented by 0 and positive voltage respectively


blogic 0 and, -1 are represented by negative and positive voltages respectively


clogic 0 voltage level is higher than logic 1 voltage level


dlogic 0 voltage level is lower than logic 1 voltage level



The number of Boolean functions that can be generated by n variables is equal to_________________?


a2n


b22 n


c2n-1


d— 2n


View Answer 22 n

The number 1000 would appear just immediately after__________________?


aFFFF (hex)


b1111 (binary)


c 7777 (octal)


dAll of the above


View Answer FFFF (hex)

What is the octal equivalent of the binary number : 10111101 ?


a675


b275


c572


d573


View Answer 275

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