Logic Gates (OR. AND. NOT. NAND and NOR) NEET Questions

Physics - Electronic Devices

Logic Gates (OR. AND. NOT. NAND and NOR) MCQ Questions


7.
The truth table of OR gate (A, B โ†’ Y) shows Y = 0 when:
A.
A = 0 and B = 1
B.
A = 0 and B = 0
C.
A = 1 and B = 0
D.
A = 1 and B = 1
๐Ÿ˜‘ View Answer Rough Work Error
ANSWER :
B. A = 0 and B = 0
8.
An OR gate can be realized using:
A.
One resistor only
B.
Two transistors in series
C.
One capacitor
D.
Two diodes with a common output terminal
๐Ÿ˜‘ View Answer Rough Work Error
ANSWER :
D. Two diodes with a common output terminal
9.
If two switches are connected in PARALLEL with a lamp, the circuit behaves like:
A.
AND gate
B.
NAND gate
C.
OR gate
D.
NOT gate
๐Ÿ˜‘ View Answer Rough Work Error
ANSWER :
C. OR gate
10.
In a 3-input OR gate, the output is LOW (0) when:
A.
All three inputs are LOW (0)
B.
Any input is HIGH
C.
At least one input is HIGH
D.
Two inputs are HIGH
๐Ÿ˜‘ View Answer Rough Work Error
ANSWER :
A. All three inputs are LOW (0)
11.
In a 2-input AND gate, the output is HIGH (1) when:
A.
Inputs are different
B.
Both inputs are LOW
C.
Both inputs are HIGH (1)
D.
At least one input is HIGH
๐Ÿ˜‘ View Answer Rough Work Error
ANSWER :
C. Both inputs are HIGH (1)
12.
The Boolean expression for an AND gate with inputs A and B is:
A.
Y = A + B
B.
Y = A ยท B
C.
Y = Aฬ…
D.
Y = A โŠ• B
๐Ÿ˜‘ View Answer Rough Work Error
ANSWER :
B. Y = A ยท B