NSTSE (National Science Talent Search Exam- Unified Council) Class 6: Questions 1905 - 1912 of 2029

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Question number: 1905

» Chemistry » Separation of Substances

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MCQ▾

Question

Which type of electromagnet is used in calling bell?

Choices

Choice (4) Response

a.

Horse shoe electromagnet

b.

Circular shaped electromagnet

c.

L shaped electromagnet

d.

I shaped electromagnet

Question number: 1906

» Physics » Work and Machines

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Question

How many types of Lever are we used?

Choices

Choice (4) Response

a.

Four

b.

Three

c.

Six

d.

Two

Question number: 1907

» Chemistry » Separation of Substances

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Question

An electric current flowing in the wire produces magnetic field around it. It was proved with the help of

Choices

Choice (4) Response

a.

Magnetic compass

b.

Electromagnet

c.

One bar magnet

d.

Three bar magnet

Question number: 1908

» Physics » Work and Machines

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Question

If the mechanical advantage of a device is 20 and load is 1000 N the effort will be:

Choices

Choice (4) Response

a.

500 N

b.

5 N

c.

5000 N

d.

50 N

Question number: 1909

» Chemistry » Separation of Substances

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MCQ▾

Question

Which of the following factors can affect the strength of an electromagnet?

Choices

Choice (4) Response

a.

Strength of current

b.

Nature of core material

c.

Number of turns of coils

d.

All a. , b. and c. are correct

Question number: 1910

» Physics » Work and Machines

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Question

The efficiency of an ideal machine is:

Choices

Choice (4) Response

a.

100 %

b.

80 %

c.

90 %

d.

92 %

Question number: 1911

» Physics » Work and Machines

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MCQ▾

Question

In which of the following class of lever fulcrum is in middle?

Choices

Choice (4) Response

a.

Class III

b.

Not Mentioned

c.

Class II

d.

Class I

Question number: 1912

» Physics » Work and Machines

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MCQ▾

Question

If the efficiency of a machine is , Mechanical Advantage is 5 and load is then calculate the effort

Choices

Choice (4) Response

a.

b.

c.

d.

Developed by: