Transformers

Transformers

University

8 Qs

quiz-placeholder

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Transformers

Transformers

Assessment

Quiz

Physics

University

Hard

NGSS
HS-PS3-5, HS-PS2-5

Standards-aligned

Used 664+ times

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8 questions

Show all answers

1.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Media Image

Select the correct statement regarding Faraday's induction ring

Faraday applied AC to the primary and observed AC in the secondary

Faraday switched DC in the primary and obtain continuous AC in the secondary

Faraday switched DC in the secondary and obtained spikes of DC in the primary detected using a compass needle

Faraday switched DC in the primary and obtained spikes of DC in the secondary detected using a compass needle

Tags

NGSS.HS-PS2-5

NGSS.HS-PS3-5

2.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Which symbol corresponds to a transformer used at 50 Hz?

Media Image
Media Image
Media Image

Tags

NGSS.HS-PS3-5

3.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Which transformer loss increases as the current drawn increases?

Copper loss

Eddy current loss

Hysteresis loss

Leakage flux loss

4.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Which transformer loss increases the most as the frequency increases?

Copper loss

Eddy current loss

Hysteresis loss

Leakage flux loss

5.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Media Image

Which output voltage is NOT possible for this transformer?

9 V

15 V

18 V

23 V

33 V

6.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Which text equation is correct for a double-wound transformer?

Secondary current + no-load current = primary current

Primary current = secondary current + no-load current

Referred secondary current = primary current - no-load current

no-load current = primary current + referred secondary current

7.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Increasing the cross-sectional area of a DW 230 V transformer core:

Allows a higher voltage to be applied

Increases the secondary voltage

Increases the core flux density

Reduces the flux in the core

8.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

The dot notation:

ensures the magnetic field around a current-carrying conductor can be identified

identifies the transformer input terminals

identifies the transformer output terminals

ensures the output and input can be

in-phase

Tags

NGSS.HS-PS2-5

NGSS.HS-PS3-5