Instrumentation Transducers Questions and Answers – Basic Digital Building Blocks

This set of Instrumentation Transducers online test focuses on “Basic Digital Building Blocks”.

1. TTL stands for __________________
a) Transistor-triode-logic
b) Triode-transistor-logic
c) Triode-triode-logic
d) Transistor-transistor-logic
View Answer

Answer: d
Explanation: TTL is the simplified for of transistor-transistor-logic and it is a circuit type of IC.

2. Which of the following is correct for digital devices?
a) Single stable logic level
b) Double stable logic level
c) Triple stable logic level
d) Infinite stable logic level
View Answer

Answer: b
Explanation: A typical digital logic device has two stable logic level, high and low levels.

3. Which of the following gate act as inverter?
a) AND gate
b) OR gate
c) NOT gate
d) NAND gate
View Answer

Answer: c
Explanation: NOT gate is an inverter in which output is the logically inverted form of input.
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4. Unity-gain amplifier is the equivalent of _______________
a) Inverter
b) Driver
c) Amplifier
d) Rectifier
View Answer

Answer: b
Explanation: Driver is the equivalent of unity-gain amplifier, which simply presents the logic state of the input at the output terminal.

5. Which of the following represents ‘inhibit’ gate?
a) AND gate
b) NAND gate
c) OR gate
d) NOR gate
View Answer

Answer: a
Explanation: An inhibit gate is AND gate with one of its input terminal being preceded by an inverter.
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6. In op-amp IC negative saturation is defined by ______________
a) Logic High
b) Logic Low
c) Inverter
d) None of the mentioned
View Answer

Answer: b
Explanation: In simpler logic circuit of op-amp, logic low state is defined by negative saturation operation.

7. Which of the following is equivalent to voltage-controlled switch?
a) Inverter gate
b) Drier gate
c) Transmission gate
d) None of the mentioned
View Answer

Answer: c
Explanation: Transmission gate act as a voltage controlled switch, which allows the bidirectional flow of pulses.
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8. Identify the gate?

A B Q
1 0 1
0 0 0
1 1 0
0 1 0

a) AND gate
b) INHIBIT gate
c) XOR gate
d) XNOR gate
View Answer

Answer: b
Explanation: INHIBIT gate is an AND with one of its input terminals being preceded by an inverter.
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9. OR gate has high output if ____________
a) One input is low
b) One input is high
c) All of the mentioned
d) None of the mentioned
View Answer

Answer: b
Explanation: If one of the input is high, OR gate shows high output.

10. Driver has high output level when____________
a) Input is high
b) Input is high
c) All of the mentioned
d) None of the mentioned
View Answer

Answer: b
Explanation: Driver follows the input and shows high output for high input state.

Sanfoundry Global Education & Learning Series – Instrumentation Transducers.

To practice all areas of Instrumentation Transducers for online tests, here is complete set of 1000+ Multiple Choice Questions and Answers.

If you find a mistake in question / option / answer, kindly take a screenshot and email to [email protected]

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Manish Bhojasia - Founder & CTO at Sanfoundry
Manish Bhojasia, a technology veteran with 20+ years @ Cisco & Wipro, is Founder and CTO at Sanfoundry. He lives in Bangalore, and focuses on development of Linux Kernel, SAN Technologies, Advanced C, Data Structures & Alogrithms. Stay connected with him at LinkedIn.

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