Industrial Electronics Practice Quiz 02

Industrial Electronics Practice Quiz 02

Welcome to ECE Board Exam Practice Quiz for Industrial Electronics. This set of practice quiz 2 will test your competence on the theories, concepts and problem solving involving Industrial Electronics. The objectives and goals of this quiz is to help engineering students familiarize concepts and theories as well as develop problem solving skills when answering questions related to the Industrial Electronics.

Industrial Electronics Test Bank

In this section are compiled practice quiz for Industrial Electronics that could be able to enhance your knowledge and skills in your preparation for the ECE Board Exam. The goal is to add thousands of questions for you to be familiarized and hopefully help you to be prepared. I am looking forward that this practice quiz will give you an additional confidence in taking your upcoming Engineering Board Exam.

Guidelines:
  • Read and understand each question before choosing the best answer.
  • The correct answer will be reveal after you have chosen your answer for every questions
  • There is no time limit, answer the questions at your own pace.
  • Once all questions are answered, you will be shown your rating.
  • You have to get 70% of the total items to pass the quiz.
  • You can re-take the quiz as many times as you want or until you are satisfied of your rating.
  • Comment us your thoughts, scores, ratings, and questions about the quiz in the comments section below!

Choose the letter of the best answer in each questions.

Which of the following is the normal way to turn on an SCR?
By breakover voltage
By appropriate anode current
By appropriate cathode current
By appropriate gate current

Correct!

Wrong!

In diagnostic radiology and for superficial therapy purposes, the energy spectrum of radiation varies from about
1 to 10 KeV
10 to 100 KeV
100 to 10000 KeV
10000 to 100000 KeV

Correct!

Wrong!

The V-I characteristics for a triac in the first and third quadrants are essentially identical to those of _______ in the quotation.
SCR
UJT
Transistor
SCS

Correct!

Wrong!

Control system that maintains a speed voltage, or other variable within specified limits of a preset level.
Controller
Regulator
Sensor
Computer

Correct!

Wrong!

Which equation defines the intrinsic stand off ratio (η) of UJTs?
RB1 / (RB1 + RB2)
(RB1 + RB2) / RB1
(RB1 + RB2) / RB2
RB1 + RB2

Correct!

Wrong!

Which of the following is the normal way to turn on a diac?
By breakover voltage
By gate voltage
By gate current
By anode current

Correct!

Wrong!

How many semiconductor layers does an SCR have?
Four
Two
Three
Five

Correct!

Wrong!

A diac has how many terminals?
Two
Three
Four
Five

Correct!

Wrong!

A diac is _____ switch.
an AC
a mechanical
a dc
both ac and dc

Correct!

Wrong!

The UJT has
two pn junctions
three pn junctions
one pn junction
four on junction

Correct!

Wrong!

The three terminals of a triac are
drain, source, gate
two main terminals and a gate terminal
cathode, anode and gate
anode, source, gate

Correct!

Wrong!

Which of the following is a four-layer diode with an anode gate and a cathode gate?
SCS
SCR
SBS
SUS

Correct!

Wrong!

An SCR is a _______ triggered device.
current
power
voltage
noise

Correct!

Wrong!

Which transistor conducts current in both directions when turned on?
Diac
SCR
Quadrac
SCS

Correct!

Wrong!

The three terminals of an SCR are the
anode, cathode, and grid
cathode, anode, gate
anode, cathode, drain
drain, source, gate

Correct!

Wrong!

Which is the control element in an SCR?
Anode
Cathode
Gate
Cathode supply

Correct!

Wrong!

A diac has how many semiconductor layers?
Three
Four
Two
Five

Correct!

Wrong!

What is the control element in an SCR?
Gate
Anode
Grid
Cathode

Correct!

Wrong!

What is concerned with the measurement of electric signals on the scalp with arise from the underlying neural activity in the brain (including synaptic sources)?
ECG
EEG
Ultrasound
EKG

Correct!

Wrong!

When the temperature increases, the intrinsic stand off ratio
increases
decreases
essentially constant
becomes zero

Correct!

Wrong!

Which of the following is a common application of UJT?
Amplifier
Rectifier
Mulitivibrator
Sawtooth generator

Correct!

Wrong!

When the emitter terminal of a UJT is open, the resistance between the base-terminals is generally
low
extremely low
high
extremely high

Correct!

Wrong!

What is the other term for thermoelectric effect?
Seebeck effect
Hall effect
Photoelectric effect
Thermal effect

Correct!

Wrong!

A diac has
one pn junction
three pn junctions
two pn junctions
four pn junctions

Correct!

Wrong!

What is the typical value of the interbase resistance of UJTs?
20 KΩ
Between 4 to 4 KΩ
4 KΩ
Between 4 to 10 KΩ

Correct!

Wrong!

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