Number System & Logic Gates

50 Questions | By Gursharan_tatla | Last updated: Jan 9, 2013

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This quiz covers number system, codes and logic gates.

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Questions and Answers

1.

What is the base of Hexadecimal Number System?
- A.
  
  2
- B.
  
  16
- C.
  
  8
- D.
  
  5
- E.
  
  10
2.

What is the base of Binary Number System
- A.
  
  2
- B.
  
  5
- C.
  
  8
- D.
  
  10
- E.
  
  16
3.

In decimal number system, the digit coming after 9 is:
- A.
  
  19
- B.
  
  11
- C.
  
  10
- D.
  
  8
- E.
  
  0
4.

In hexadecimal number system, the digit coming after 9 is:
- A.
  
  10
- B.
  
  8
- C.
  
  F
- D.
  
  A
- E.
  
  1F
5.

In hexadecimal number system, the digit coming after F is:
- A.
  
  10
- B.
  
  1F
- C.
  
  11
- D.
  
  A
- E.
  
  9
6.

Convert (25)₁₀ into ( )₂.
- A.
  
  11101
- B.
  
  10001
- C.
  
  10011
- D.
  
  10101
- E.
  
  11001
7.

Convert (0.625)₁₀ to ( )₂.
- A.
  
  0.110
- B.
  
  0.101
- C.
  
  0.111
- D.
  
  0.001
- E.
  
  0.010
8.

Convert (12)₁₀ to ( )₈.
- A.
  
  12
- B.
  
  13
- C.
  
  14
- D.
  
  15
- E.
  
  16
9.

Convert (11011)₂ to ( )₁₀.
- A.
  
  24
- B.
  
  25
- C.
  
  26
- D.
  
  27
- E.
  
  28
10.

Convert (10101)₂ to ( )₁₀.
- A.
  
  21
- B.
  
  22
- C.
  
  23
- D.
  
  24
- E.
  
  25
11.

Convert (73)₈ to ( )₁₀.
- A.
  
  55
- B.
  
  56
- C.
  
  57
- D.
  
  58
- E.
  
  59
12.

Convert (46)₈ to ( )₂.
- A.
  
  100101
- B.
  
  100110
- C.
  
  110100
- D.
  
  100010
- E.
  
  100111
13.

Convert (1256)₈ to ( )₂.
- A.
  
  001101101110
- B.
  
  001010110110
- C.
  
  001010101110
- D.
  
  001010101011
- E.
  
  001010011110
14.

Convert (101111)₂ to ( )₈.
- A.
  
  57
- B.
  
  56
- C.
  
  75
- D.
  
  54
- E.
  
  53
15.

Convert (A9)₁₆ to ( )₂.
- A.
  
  10101000
- B.
  
  10011010
- C.
  
  10101010
- D.
  
  10101011
- E.
  
  10101001
16.

Convert (11011101100)₂ to ( )₁₆.
- A.
  
  DD4
- B.
  
  6EC
- C.
  
  6DC
- D.
  
  CE6
- E.
  
  CD6
17.

Convert (27A9)₁₆ to ( )₈.
- A.
  
  023651
- B.
  
  023551
- C.
  
  023561
- D.
  
  023661
- E.
  
  025361
18.

Convert (356)₈ to ( )₁₆.
- A.
  
  0EF
- B.
  
  0FF
- C.
  
  0EE
- D.
  
  0DC
- E.
  
  0FE
19.

Represent (-22)₁₀ in signed magnitude form.
- A.
  
  110111
- B.
  
  010110
- C.
  
  101101
- D.
  
  111011
- E.
  
  110110
20.

Represent (25)₁₀ in 1's complement form.
- A.
  
  11001
- B.
  
  00111
- C.
  
  00110
- D.
  
  00100
- E.
  
  01001
21.

Represent (19)₁₀ in 2's complement form.
- A.
  
  01101
- B.
  
  10011
- C.
  
  10010
- D.
  
  01110
- E.
  
  01011
22.

Add (1101)₂ with (0111)₂.
- A.
  
  11011
- B.
  
  10101
- C.
  
  10110
- D.
  
  10100
- E.
  
  11001
23.

Subtract (0101)₂ from (1101)₂.
- A.
  
  1001
- B.
  
  1100
- C.
  
  1011
- D.
  
  1000
- E.
  
  1101
24.

Add (664)₈ with (362)₈.
- A.
  
  1264
- B.
  
  1246
- C.
  
  1247
- D.
  
  1245
- E.
  
  1244
25.

Add (59)₁₆ with (A3)₁₆.
- A.
  
  CF
- B.
  
  A9
- C.
  
  FC
- D.
  
  FD
- E.
  
  FE
26.

Convert (24)₁₀ to BCD.
- A.
  
  00101001
- B.
  
  00101101
- C.
  
  00101000
- D.
  
  00100100
- E.
  
  00100110
27.

Perform BCD addition of (45)₁₀ with (93)₁₀.
- A.
  
  000100111100
- B.
  
  000100111000
- C.
  
  000100111001
- D.
  
  001100011000
- E.
  
  000100111110
28.

Convert (25)₁₀ to XS-3 code.
- A.
  
  01011001
- B.
  
  01011100
- C.
  
  10101000
- D.
  
  01011101
- E.
  
  01011000
29.

Perform the XS-3 addition of (47)₁₀ with (35)₁₀.
- A.
  
  10110101
- B.
  
  10100101
- C.
  
  10111010
- D.
  
  10110110
- E.
  
  10110011
30.

Find the cyclic code of (7)₁₀.
- A.
  
  1010
- B.
  
  1011
- C.
  
  1001
- D.
  
  1100
- E.
  
  1110
31.

Find gray code of (12)₁₀.
- A.
  
  1000
- B.
  
  1001
- C.
  
  1010
- D.
  
  1011
- E.
  
  1100
32.

Convert the gray code (1001011)₂ to binary.
- A.
  
  1110110
- B.
  
  1110011
- C.
  
  1100110
- D.
  
  1110010
- E.
  
  1110101
33.

What does X-OR gate do?
- A.
  
  Give a high output when one or more of its inputs are high
- B.
  
  Give a high output when only one of its inputs are high
- C.
  
  Give a low output when one or more of its inputs are high
- D.
  
  Give a low output when only one of its inputs are high
- E.
  
  None of the above
34.

What type of logic gate does this symbol represent?
- A.
  
  AND Gate
- B.
  
  OR Gate
- C.
  
  NAND Gate
- D.
  
  NOR Gate
- E.
  
  X-OR Gate
35.

The following truth table represents the behavior of which logic gate?
- A.
  
  NAND Gate
- B.
  
  NOR Gate
- C.
  
  X-OR Gate
- D.
  
  X-NOR Gate
- E.
  
  AND Gate
36.

What happens if we connect together the inputs of NAND and NOR gates?
- A.
  
  Help produce multi-input gates
- B.
  
  Produce and X-NOR gate
- C.
  
  Produce a NOT gate
- D.
  
  Short circuit
- E.
  
  Damage the gate
37.

What type of logic gate's behaviour does this truth table represent?
- A.
  
  2 input OR
- B.
  
  3 input OR
- C.
  
  3 input X-OR
- D.
  
  3 input X-NOR
- E.
  
  4 input X-OR
38.

What type of logic gate does this logic circuit configuration produce?
- A.
  
  NAND Gate
- B.
  
  NOR Gate
- C.
  
  AND Gate
- D.
  
  X-NOR Gate
- E.
  
  X-OR Gate
39.

Which of the following gates generates the truth table shown?
- A.
  
  AND Gate
- B.
  
  OR Gate
- C.
  
  NAND Gate
- D.
  
  NOR Gate
- E.
  
  X-OR Gate
40.

The following circuit is equal to which logic gate?
- A.
  
  AND Gate
- B.
  
  OR Gate
- C.
  
  NOT Gate
- D.
  
  X-OR Gate
- E.
  
  X-NOR Gate
41.

The following circuit is equal to which logic gate?
- A.
  
  AND Gate
- B.
  
  OR Gate
- C.
  
  NOT Gate
- D.
  
  X-OR Gate
- E.
  
  X-NOR Gate
42.

The following circuit is equal to which logic gate?
- A.
  
  AND Gate
- B.
  
  OR Gate
- C.
  
  NOT Gate
- D.
  
  X-OR Gate
- E.
  
  X-NOR Gate
43.

Which logic gate gives the complement of input?
- A.
  
  AND Gate
- B.
  
  OR Gate
- C.
  
  NOT Gate
- D.
  
  NAND Gate
- E.
  
  NOR Gate
44.

What is the missing output in the given truth table for X-NOR gate?
- A.
  
  0
- B.
  
  1
45.

What type of logic gate does this symbol represent?
- A.
  
  AND Gate
- B.
  
  OR Gate
- C.
  
  NAND Gate
- D.
  
  NOR Gate
- E.
  
  X-OR Gate
46.

OR gate is equivalent to which operation?
- A.
  
  Logical Addition
- B.
  
  Logical Multiplication
- C.
  
  Logical Complement
- D.
  
  Logical Division
- E.
  
  Logical Subtraction
47.

AND gate is equivalent to which operation?
- A.
  
  Logical Addition
- B.
  
  Logical Multiplication
- C.
  
  Logical Complement
- D.
  
  Logical Division
- E.
  
  Logical Subtraction
48.

The following circuit is equivalent to which logic gate?
- A.
  
  AND Gate
- B.
  
  OR Gate
- C.
  
  NOT Gate
- D.
  
  X-OR Gate
- E.
  
  X-NOR Gate
49.

Tjhis The following circuit is equivalent to which logic gate?
- A.
  
  AND Gate
- B.
  
  OR Gate
- C.
  
  NOT Gate
- D.
  
  X-OR Gate
- E.
  
  X-NOR Gate
50.

How many inputs can a NOT gate have?
- A.
  
  1
- B.
  
  2
- C.
  
  3
- D.
  
  4
- E.
  
  5

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