141 S5 A

141 S5 A

Professional Development

30 Qs

quiz-placeholder

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141 S5 A

141 S5 A

Assessment

Quiz

Specialty

Professional Development

Hard

Created by

Rizwan Rizwan

Used 2+ times

FREE Resource

30 questions

Show all answers

1.

MULTIPLE CHOICE QUESTION

2 mins • 1 pt

What is the primary function of step-up transformers used in national electrical transmission?
A) To decrease voltage
B) To transform electricity into mechanical energy
C) To increase voltage
D) To regulate current

2.

MULTIPLE CHOICE QUESTION

2 mins • 1 pt

What is the advantage of using auto-transformers?
A) They are more efficient
B) They have multiple windings
C) They are smaller in size
D) They are safer in case of a fault

3.

MULTIPLE CHOICE QUESTION

2 mins • 1 pt

What is the role of external radiators in large power transformers?
A) To increase the oil temperature
B) To reduce the oil circulation
C) To improve cooling by natural convection
D) To generate electricity

4.

MULTIPLE CHOICE QUESTION

2 mins • 1 pt

In what application are safety isolating transformers commonly used?
A) Laboratory experiments
B) Starting induction motors
C) Bathroom shaver supply
D) High-voltage transmission

5.

MULTIPLE CHOICE QUESTION

2 mins • 1 pt

Why are instrument transformers used in large power circuits?
A) To increase energy efficiency
B) To reduce electrical losses
C) To measure current and voltage safely
D) To regulate the frequency of electricity

6.

MULTIPLE CHOICE QUESTION

2 mins • 1 pt

What is the primary purpose of a centre-tapped safety transformer?
A) To increase voltage
B) To decrease voltage
C) To provide a direct connection to earth
D) To amplify electrical signals

7.

MULTIPLE CHOICE QUESTION

2 mins • 1 pt

What is the main advantage of using centre-tapped systems for portable power tools?
A) Increased efficiency
B) Greater power output
C) Enhanced tool durability
D) Reduced risk of electrical shock

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