Q.1

The units for the HIGH time for a periodic wave are ________.

  • seconds
  • hertz
  • cycles
  • %
Q.2

What is the advantage of using CMOS logic over TTL?

  • It switches faster.
  • It uses less power.
  • It is larger.
  • cost
Q.3

The period of a waveform is the percentage of time the signal is HIGH.

  • True
  • False
Q.4

What is the minimum voltage required before a diode will allow current to flow between the cathode and the anode?

  • 0.7 V
  • 0.07 V
  • 4.3 V
  • 0.2 V
Q.5

TTL logic chips must have connections to Vcc and ground, even if all inputs and outputs are properly used and tied to valid signals.

  • True
  • False
Q.6

What is a disadvantage of CMOS in place of TTL?

  • It switches slower.
  • It uses less power.
  • It is smaller.
  • cost
Q.7

What is the advantage of using serial data transmission over parallel data transmission?

  • It is slower.
  • Only one pair of wires is required.
  • More people use it.
  • It is faster.
Q.8

A TTL totem-pole circuit is designed so that the output transistors:

  • are always on together
  • provide phase splitting
  • provide voltage regulation
  • are never on together
Q.9

What is used to graphically show the time relationship between two or more digital waveforms?

  • reference diagram
  • timing diagram
  • voltage curve
  • load line
Q.10

An indication of cutoff in an NPN bipolar transistor is that the:

  • collector current is maximum
  • collector-to-emitter voltage equals zero
  • base-to-emitter voltage equals 0.7 V
  • collector to emitter appears to be open
Q.11

When an IC has two rows of parallel connecting pins, the device is referred to as a:

  • QFP
  • DIP
  • TSSOP
  • CMOS
Q.12

The units for the HIGH time for a periodic wave are ________.

  • seconds
  • hertz
  • cycles
  • %
Q.13

When an IC has two rows of parallel connecting pins, the device is referred to as a:

  • QFP
  • DIP
  • TSSOP
  • CMOS
Q.14

When an IC has two rows of parallel connecting pins, the device is referred to as a:

  • QFP
  • DIP
  • TSSOP
  • CMOS
Q.15

Why is parallel data transmission preferred over serial data transmission for most applications?

  • It is much slower.
  • It is cheaper.
  • More people use it.
  • It is much faster.
Q.16

Normal operation of an NPN bipolar transistor requires the base to be ________ with respect to the emitter, and ________ with respect to the collector.

  • positive, negative
  • positive, positive
  • negative, positive
  • negative, negative
Q.17

The abbreviation NO, when used with respect to electromechanical relays, stands for not operational.

  • True
  • False
Q.18

The serial format for transmitting binary information uses:

  • a single conductor
  • multiple conductors
  • infrared technology
  • fiber-optic
Q.19

The abbreviation NO, when used with respect to electromechanical relays, stands for not operational.

  • True
  • False
Q.20

The abbreviation NO, when used with respect to electromechanical relays, stands for not operational.

  • True
  • False
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