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Digital Electronics

Study 36 Electrical Engineering MCQs with correct answers and explanations.

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31Electrical EngineeringMedium

The fan put of a 7400 NAND gate is________?

A5TTL

B8TTL

C10TTL

D2TTL

Correct answer

C. 10TTL

Explanation

The correct answer is 10TTL.

32Electrical EngineeringMedium

The NAND gate is AND gate followed by________?

ANOT gate

BAND gate

CNone of the above

DOR gate

Correct answer

A. NOT gate

Explanation

The correct answer is NOT gate.

33Electrical EngineeringMedium

Most of the digital computers do not have floating point hardware because________?

Aof no specific reason.

Bit is slower than software

Cit is not possible to perform floating point addition by hardware

Dfloating point hardware is costly

Correct answer

D. floating point hardware is costly

Explanation

The correct answer is floating point hardware is costly.

34Electrical EngineeringMedium

What is/are the configurable functions of each and every IOBs connected around the FPGA device from the operational point of view?

ATristate output operation

BAll of the above

CInput operation

DBi-directional I/O pin access

Correct answer

B. All of the above

Explanation

The correct answer is All of the above.

35Electrical EngineeringMedium

The NOR gate is OR gate followed by________?

AAND gate

BNAND gate

CNone of the above

DNOT gate

Correct answer

D. NOT gate

Explanation

The correct answer is NOT gate.

36Electrical EngineeringMedium

Consider the representation of six-bit numbers by two’s complement, one’s complement, or by sign and magnitude: In which representation is there overflow from the addition of the integers 011000 and 011000?

ASign and magnitude and one’s complement only

BTwo’s complement only

CAll three representations

DTwo’s complement and one’s complement only

Correct answer

C. All three representations

Explanation

The correct answer is All three representations.

31Electrical EngineeringMedium

The fan put of a 7400 NAND gate is________?

A5TTL

B8TTL

C10TTL

D2TTL

Correct answer

C. 10TTL

Explanation

The correct answer is 10TTL.

32Electrical EngineeringMedium

The NAND gate is AND gate followed by________?

ANOT gate

BAND gate

CNone of the above

DOR gate

Correct answer

A. NOT gate

Explanation

The correct answer is NOT gate.

33Electrical EngineeringMedium

Most of the digital computers do not have floating point hardware because________?

Aof no specific reason.

Bit is slower than software

Cit is not possible to perform floating point addition by hardware

Dfloating point hardware is costly

Correct answer

D. floating point hardware is costly

Explanation

The correct answer is floating point hardware is costly.

34Electrical EngineeringMedium

What is/are the configurable functions of each and every IOBs connected around the FPGA device from the operational point of view?

ATristate output operation

BAll of the above

CInput operation

DBi-directional I/O pin access

Correct answer

B. All of the above

Explanation

The correct answer is All of the above.

35Electrical EngineeringMedium

The NOR gate is OR gate followed by________?

AAND gate

BNAND gate

CNone of the above

DNOT gate

Correct answer

D. NOT gate

Explanation

The correct answer is NOT gate.

36Electrical EngineeringMedium

Consider the representation of six-bit numbers by two’s complement, one’s complement, or by sign and magnitude: In which representation is there overflow from the addition of the integers 011000 and 011000?

ASign and magnitude and one’s complement only

BTwo’s complement only

CAll three representations

DTwo’s complement and one’s complement only

Correct answer

C. All three representations

Explanation

The correct answer is All three representations.