Deck 23: Basic Industrial Electronics

Question 1

The three leads of a bipolar junction transistor are called ____.

A) anode, cathode, and gate
B) main terminal 1, main terminal 2, and gate
C) base 1, base 2, and emitter
D) emitter, base, and collector

Answer 1

D

Question 2

UJTs, SCRs, diacs, and triacs belong to a family of devices known as ____.

A) FETs
C) BJTs
B) thyristors
D) ICs

Answer 2

B

Question 3

The three leads of a MOSFET are called ____.

A) anode, cathode, and gate
B) main terminal 1, main terminal 2, and gate
C) base 1, base 2, and emitter
D) source, gate, and drain

Answer 3

D

Question 4

An op-amp is configured so that the circuit has a gain of 1. This circuit is called a(n) ____.

A) differential amplifier
C) integrator
B) buffer amplifier
D) summing amplifier

Question 5

A rectifier is a component that converts AC to DC by allowing the current to be ____.

A) increased
C) removed
B) decreased
D) all positive or all negative

Question 6

A diode is tested with an ohmmeter. The ohmmeter indicates a reading of 4 $\Omega$ regardless of which way the ohmmeter leads are connected. The diode is probably ____.

A) okay
B) open
C) shorted
D) a zener

Question 7

A(n) ____ is a three-terminal semiconductor device that operates as a switch when triggered into conduction by a gate signal. This device only conducts in one direction.

A) diac
C) SCR
B) triac
D) transistor

Question 8

When a 555 timer is operated in the astable mode, the output will be a ____.

A) single pulse
C) stream of pulses
B) spike
D) steady 5 V DC

Question 9

A diode that functions as a voltage-sensitive AC switch is called a ____.

A) rectifier
C) triac
B) zener
D) diac

Question 10

What do the letters "LED" represent?

A) Light-emitting diode
C) Lagging electrical device
B) Loose electron delay
D) Low-emission device

Question 11

In order for a triac to conduct, the gate terminal must be ____.

A) of the same polarity as MT1
C) positive
B) of the same polarity as MT2
D) negative

Question 12

Another name for an op-amp circuit used as a level detector is ____.

A) comparator
C) difference amplifier
B) integrator
D) summing amplifier

Question 13

A photodiode ____.

A) is used to capture pictures
C) conducts in the presence of light
B) emits light
D) conducts in the absence of light

Question 14

On a diode, the terminal represented by a T-shaped symbol is the ____.

A) anode
C) gate
B) cathode
D) trigger

Question 15

UJTs are considered to be what type of device?

A) analog
C) digital
B) amplifier
D) linear

Question 16

The voltage measured across a conducting zener diode is always ____.

A) 0.3 V
B) 0.7 V
C) 5.1 V
D) whatever the voltage rating of the zener diode is