Physics Rotation

Physics Rotation

10th Grade

25 Qs

quiz-placeholder

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Physics Rotation

Physics Rotation

Assessment

Quiz

Science

10th Grade

Practice Problem

Hard

NGSS
HS-PS2-5, MS-PS2-2, HS-PS2-1

+7

Standards-aligned

Created by

Lisa Thompson

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25 questions

Show all answers

1.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

Media Image

A stone rotates and "curls" in the

direction of rotation of the throw

opposite direction of rotation of the throw

direction the sweeper pushes it

any direction since it is filled with fluid

2.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

How is contact between the coil and circuit maintained in an alternator?

A split ring commutator connects to each side for half a turn

It cannot be maintained.

The alternator can only complete one revolution and must then be rotated in reverse

Slip rings and brushes allow continuous connection

3.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

How can the voltage output from an alternator be doubled?

Halve the speed of rotation but reverse the direction of rotation

Double the speed of rotation

Reverse the direction of rotation

Use half the number of coils

Tags

NGSS.HS-PS2-5

NGSS.HS-PS3-3

4.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

The voltage from a dynamo changes as the coil turns. What is the voltage one half turn after the maximum positive output?

Half the maximum output

Maximum positive output again

Zero voltage

Maximum negative output

5.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

How can the voltage output from a dynamo be doubled?

Reverse the direction of rotation

Halve the speed of rotation but reverse the direction of rotation

Double the speed of rotation

Use half the number of coils

Tags

NGSS.HS-PS2-5

NGSS.HS-PS3-3

6.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

In a dynamo, what is the function of the split ring commutator?

It strengthens the magnetic field to make a greater output current for the same rotation speed

It reverses the connections every half turn, to keep the output current alternating every half turn

It reverses the coil connections every half turn, to keep the output current in the same direction all the time

It prevents the coil from overheating

Tags

NGSS.HS-PS2-5

NGSS.HS-PS3-5

7.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

Media Image

What is the anticlockwise moment acting on this crane?

80,000Nm

100,000Nm

120,000Nm

140,000Nm

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