Question
Two NAND gates are joined together as shown.
Which single logic gate is equivalent to this combination?
A AND B NAND C NOR D OR
Answer/Explanation
Ans:
A
Question
There are two inputs and one output for the combination of logic gates shown.
Which truth table represents the operation of this combination of logic gates?
Answer/Explanation
Ans:B
Question
The diagram shows an electric drill and safety guard.
The drill requires the logic circuit shown.
The circuit must only allow the motor to start when the safety guard is closed. If the safety guard is not closed when the starting switch is on, the alarm must sound.
Which logic gate is missing from the circuit?
A NOT B NAND C AND D NOR
Answer/Explanation
Ans:
C
Question
The circuit shown contains two gates.
Which truth table describes the operation of the circuit?
Answer/Explanation
Ans: D
Question
Which circuit has a zero reading on the ammeter?
Answer/Explanation
Ans: D