MATH & SCI. TEST 1

MATH & SCI. TEST 1

University

25 Qs

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MATH & SCI. TEST 1

MATH & SCI. TEST 1

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Created by

RAJESH SHARMA

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25 questions

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1.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Which one of the following is useful friction ?

Rings in cylinders

Crankshaft bearings

Brake shoe linings

Wheel hole bearings

2.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Which is in between the wheels and road, if vehicles are able to run on roads ?

erosion

motion

corrosion

friction

3.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Which direction of motion frictional force acts ?

equal

opposite

inclined

forward

4.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Determine the co-efficient of friction() between brass and steel when a brass slider was placed on the horizontal steel surface until it is just moving, if brass slides (W) = 3 Kgf Brass slides (W) = 3 Kgf Force (F) required = 0.7 kgf

0.033

0.133

0.233

0.333

5.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Which is necessary to avoid production of heat ?

sand

coolant

lubricant

salt

6.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Which is using for reduce the friction ?

lubricants

sand

coal

coolant

7.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Centre of gravity is usually located where ?

more weight is concentrated

less weight is concentrated

less mass is concentrated

more mass is concentrated

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