Industrial Electronics Practice Quiz 01

Industrial Electronics Practice Quiz 01

Welcome to ECE Board Exam Practice Quiz for Industrial Electronics. This set of practice quiz 1 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.

To turn on the UJT, the forward bias on emitter diode should be _______ the peak point voltage.
more than
less than
equal to
twice

Correct!

Wrong!

What is a nucleonic sensing method employing usually one or more radioisotope sources and radiation detectors?
Radiation sensing
Sonic level sensing
Conductivity level sensing
Dielectric variation sensing

Correct!

Wrong!

What is a three terminal device used to control large current to a load?
SCR
SCS
GTO
Thyristor

Correct!

Wrong!

Power electronics deals with the control of ac power at what frequencies essentially?
20 KHz
1000 KHz
Frequencies less than 10 Hz
60 Hz frequency

Correct!

Wrong!

A UJT is sometimes called a _______ diode.
double-based
single-based
a rectifier
a switching diode

Correct!

Wrong!

A triac is a _______ switch.
unidirectional
mechanical
bidirectional
omnidirectional

Correct!

Wrong!

What is basically a two-terminal parallel-inverse combination of semiconductor layers that permits triggering in either direction?
Diac
Triac
Quadrac
Shockley Diode

Correct!

Wrong!

PUT stands for
Programmable Unijunction Transistor
Programmable Universal Transistor
Pulse Unijunction Transistor
Pulse Universal Transistor

Correct!

Wrong!

The UJT may be used as
an amplifier
a rectifier
a sawtooth generator
a multivibrator

Correct!

Wrong!

A triac is equivalent to two SCRs
in parallel
in inverse-parallel
in series
in inverse-series

Correct!

Wrong!

AC power in a load can be controlled by connecting
two SCRs in series
two SCRs in parallel
two SCRs in parallel opposition
two SCRs in series opposition

Correct!

Wrong!

A triac can pass a portion of ______ half cycle through the load
only positive
only negative
both positive and negative
neither positive nor negative

Correct!

Wrong!

Which device does not have a gate terminal?
Triac
SCR
FET
Diac

Correct!

Wrong!

The p-type emitter of a UJT is _______ doped.
lightly
moderately
heavily
not

Correct!

Wrong!

In therapeutic radiology and in nuclear medicine, the energies of interest range from about
10 to 100 KeV
100 to 10000 KeV
10000 to 10000 KeV
1 to 10 KeV

Correct!

Wrong!

The x-ray region of the electromagnetic spectrum has a corresponding range of wavelengths from
0.1 to 0.0001 nm
0.1 to 0.0001 pm
0.1 to 0.0001 μm
0.1 to 0.0001 mm

Correct!

Wrong!

When UJTs is turned on, the resistance between emitter terminal and lower base terminal
remains unchanged
increases
decreases
becomes zero

Correct!

Wrong!

How many semiconductor layers does a triac have?
Two
Four
Three
One

Correct!

Wrong!

An effect that reduces the possibility of accidental triggering of the SCS.
Miller effect
Rate effect
End effect
Flywheel effect

Correct!

Wrong!

An SCR combines the feature of
a rectifier and resistance
a rectifier and capacitor
a rectifier and transistor
a rectifier and inductor

Correct!

Wrong!

If a body is considered as a conducting sphere of 0.5m radius its capacitance to infinity is
55 pF
55 nF
55 μF
55 F

Correct!

Wrong!

An SCR is made of silicon and not germanium because silicon.
is inexpensive
has low leakage current
is mechanically strong
is tetravalent

Correct!

Wrong!

To turn off the SCR, which of the following is done?
Reduce gate voltage to zero
Reverse bias the gate
Reduce anode voltage to zero
Reduce cathode voltage to zero

Correct!

Wrong!

When the temperature increases, the inter-base resistance of a UJT
Remains unchanged
Increases
Decreases
is zero

Correct!

Wrong!

What are the regions corresponding to open-circuit condition for the controlled rectifier which block the flow of charge from anode to cathode?
Forward blocking regions
Reverse blocking regions
Breakdown regions
Both Forward blocking regions and Reverse blocking regions

Correct!

Wrong!

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Industrial Electronics – Quiz 01

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