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