IndiaBIX

Electronics and Communication Engineering - Electronic Devices and Circuits

Exercise : Electronic Devices and Circuits - Section 3
1.
Octal number 12 is equal to decimal number
8
9
10
11
Answer: Option
Explanation:

12 in octal = 8 + 2, i.e., 10 in decimal.

2.
Hexadecimal number E is equal to binary number
1110
1101
1001
1111
Answer: Option
Explanation:

E = 14 in decimal or 1110 (8 + 4 + 2 + 0 = 14) is binary.

3.
Decimal number 46 in excess 3 code =
1000 1001
0111 1001
0111 1111
1000 1111
Answer: Option
Explanation:

Decimal 46 in excess 3 code = 46 + 33 = 79 in decimal = 0111 1001 in 4 bit binary.

4.
Logic hardware is available only in NAND and NOR.
True
False
Answer: Option
Explanation:

Other gates are also available.

5.
A 4 input AND gate is equivalent to
4 switches in parallel
2 switches in series and 2 in parallel
three switches in parallel and one in series
4 switches in series
Answer: Option
Explanation:

All the switches have to be closed so that the circuit can be made. In AND gate all the inputs have to be high for output to be high.

Quick links
Quantitative Aptitude
Verbal (English)
Reasoning
Programming
Interview
Placement Papers