Analytical Instrumentation Questions and Answers – Logic Families

This set of Analytical Instrumentation Questions and Answers for Entrance exams focuses on “Logic Families”.

1. Which of the following is the most widely employed logic family?
a) Emitter-coupled logic
b) Transistor-transistor logic
c) CMOS logic family
d) NMOS logic
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2. The basic function of TTL gate is which of the following functions?
a) AND
b) OR
c) NOR
d) NAND
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3. In TTL logic, the input transistor has a number of ________ equal to the desired fan-in of the circuit.
a) Base
b) Collect
c) Emitter
d) Gate
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4. Which of the following is the propagation delay of TTL circuits?
a) 1 s
b) 1 ms
c) 1 ns
d) 1 ps
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5. The standard TTL gates are marketed as _______ series.
a) 80
b) 82
c) 74
d) 08
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6. Schottky TTL logic family does not have which of the following features?
a) Good fan-in
b) Good fan-out
c) High speed capability
d) High propagation delay
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7. The logic ‘0’ of ECL is represented as ______V and logic ‘1’ is represented as ______V.
a) 1, 1.65
b) 0.9, 1.75
c) 1.2, 2.35
d) 1.9, 4.3
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8. ECL is a way of achieving a higher speed of gate.
a) True
b) False
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9. Which of the following is not the advantage of MOS gates?
a) Low power dissipation
b) Small size
c) Good immunity to noise
d) High switching speeds
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10. CMOS gates are commercially available as which of the following series?
a) 1000
b) 2000
c) 3000
d) 4000
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11. The switching of MOS gates can be improved by using CMOS.
a) True
b) False
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Sanfoundry Global Education & Learning Series – Analytical Instrumentation.

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