RAILWAY ENGINEERING QUIZ

The functional difference between SR flip-flop and JK flip-flop is that

JK flip-flop does not require external clock

None of these

JK flip-flop has a feed back path

JK flip-flop is faster than SR flip-flop

JK flip-flop accepts both inputs 1

TRUE ANSWER : ?
YOUR ANSWER : ?

Which of the following is not functionally a complete set?

AND, OR

NOR

None of these

NAND

AND, OR, NOT

TRUE ANSWER : ?
YOUR ANSWER : ?

Addition of 1101011012, 1110111012, 0001111112, 1001011012, 1111101112 is

10001010001012

11110110000102

None of these

10110101110102

10010000000102

TRUE ANSWER : ?
YOUR ANSWER : ?

A binary adder is a logic circuit that can add _____ binary numbers at a time.

One

Thousands

Two

Hundreds

None of these

TRUE ANSWER : ?
YOUR ANSWER : ?

An AND gate has 7 inputs. How many input word are in its truth table?

None of these

128

64

32

16

TRUE ANSWER : ?
YOUR ANSWER : ?

Conversion of an octal number 1438 to its decimal number is

9910

10710

None of these

97110

9010

TRUE ANSWER : ?
YOUR ANSWER : ?

Conversion of decimal number 4210 to it's octal number equivalent is

478

578

528

None of these

428

TRUE ANSWER : ?
YOUR ANSWER : ?

For what logic gate the outputs in complement of the input?

XOR

None of these

AND

OR

NOT

TRUE ANSWER : ?
YOUR ANSWER : ?

The hexadecimal digits are 0 to 9 and A to _____

None of these

F

E

G

D

TRUE ANSWER : ?
YOUR ANSWER : ?

Conversion of binary number 1100002 to hexadecimal is

None of these

3016

2716

4316

4016

TRUE ANSWER : ?
YOUR ANSWER : ?

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