Welcome to ECE Board Exam Practice Quiz for Industrial Electronics. This set of practice quiz 8 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.
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Choose the letter of the best answer in each questions.
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Part of the welding electric circuit that is used to produce high amperage current at low voltages.
Capacitor
Voltage regulator
Transformer
The secondary circuit
Correct!
Wrong!
Spot welding are most commonly used in
Ships
Automobiles
Airplanes
Rafts
Correct!
Wrong!
Another name for hammer welding
Fusion welding
RW
Maul welding
Forge welding
Correct!
Wrong!
The voltage across an SCR when it is turned on is about
0.5 V
0.1 V
1 V
5 V
Correct!
Wrong!
Regulates the time of the welding cycle.
Electrode
Current regulator
Control system
Mechanical system
Correct!
Wrong!
Which of the following does not have a base terminal?
UJT
PNP
SCR
NPN
Correct!
Wrong!
The trigger current is applied to the …
Anode
Gate
Cathode
Base
Correct!
Wrong!
Electron tube equivalent to solid state SCR.
Triode
VTVM
CRT
Thyratron
Correct!
Wrong!
Refers to the number of degrees of an AC cycle during which the SCR is turned on.
Conduction angle
Firing delay angle
Induction angle
ON angle
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Wrong!
Time when current is applied to the workpiece.
Weld time
Squeeze time
Hold time
Off period
Correct!
Wrong!
How do you stop conduction during which SCR is also conducting?
Remove voltage gate
Increase cathode voltage
Interrupt anode current
Reduce gate current
Correct!
Wrong!
The year when resistance welding was discovered.
1935
1798
1886
1945
Correct!
Wrong!
Process wherein coalescence is produced by the heat obtained from the resistance of the workpiece to the flow of low voltage, high density electric current in a circuit.
Forge welding
Resistance welding
Ultrasonic welding
LBW
Correct!
Wrong!
Machine component made up of the transformer and the current regulator.
Control system
Electrical system
Electrode system
Mechanical system
Correct!
Wrong!
Which are the three terminals of a TRIAC?
Gate, anode 1 and anode 2
Gate, source and sink
Base, emitter and collector
Emitter, base1 and base 2
Correct!
Wrong!
The minimum emitter to base 1 voltage to trigger the UJT.
Forward breakover voltage
Trigger
Breakdown voltage
Peak voltage
Correct!
Wrong!
The time when electrode force is released.
Hold time
Squeeze time
Off period
Weld time
Correct!
Wrong!
For UJT, it is the region between the peak and valley points.
Active region
Negative resistance region
Trigger region
Saturation region
Correct!
Wrong!
Resistance welding machine component that holds the workpieces.
Electrical circuit
Electrode system
Mechanical system
None of these
Correct!
Wrong!
The body structure of the car is welded by ______.
Gas welding
Spot welding
Induction welding
Arc welding
Correct!
Wrong!
The ratio of RB1 and RBB is called
Intrinsic standoff ratio
Reuber’s ratio
Common mode rejection ratio
Cat’s ratio
Correct!
Wrong!
The relative maximum workpiece thickness where spot welding can be used.
0.5 in
1 in.
1.5 in.
0.25 in.
Correct!
Wrong!
Arc welding requires a voltage around _______.
60 – 100 V
150 - 200 V
400 – 440 V
1000 – 5000 V
Correct!
Wrong!
A DIAC is equivalent to inverse parallel combination of
Shockley diodes
Schottky
BJT
SCR’s
Correct!
Wrong!
A circuit that protects a sensitive circuit from a sudden increase in supply voltage.
Crowbar
Snubber
Varistor
Eliminator
Correct!
Wrong!
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Industrial Electronics – Quiz 08
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