2023TrialMultiple choice

Q12

1 mark

Question

A transformer has 1000 windings on the primary coil and 200 windings on the secondary coil.
The primary voltage is $240\ \mathrm{V}$ , with a primary current of $10.0\ \mathrm{A}$ .
The secondary current is $44.0\ \mathrm{A}$ .

What is the efficiency and type of this transformer?

	Efficiency	Type
(A)	$23\%$	step-up
(B)	$44\%$	step-up
(C)	$20\%$	step-down
(D)	$88\%$	step-down

Luna-requested uncropped source page for question 12; requires human review and cropping — Reviewed visual · source page 6

Try the question before revealing the answer.

Syllabus alignment

Module 6 · Electromagnetism

Electromagnetic InductionAnalyse ideal transformers, transformer losses and high-voltage power transmission.

Spot a problem? Send feedback