Science & technology | Practice Questions

Multiple choice general knowledge science & technology

If you suffer from daltonism, you are:

Mute
Deaf
Color blind
Schizophrenic

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Multiple choice general knowledge science & technology

If two gears are transmitting power of 10 HP at 1000 RPM. Module of first is 4.5 then what the module of the second gear ?

10 / 2 x pi x 1000
4.5 x (10/(2 x pi x 1000)
4.5
1/4.5

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Multiple choice general knowledge science & technology

What is the maximum carbon percentage in a steel?

0.2%
2%
6%
20%

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Multiple choice general knowledge science & technology

If a cantilever beam of length 200 mm is subjected to load of 50 N at a distance of 120 mm from the fixed end of the beam. What is the maximum bending stress developed if section modulus is Zc?

50/ (120 x Zc)
50 x 80 / Zc
50 x 120 x Zc
50 x 120/Zc

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Multiple choice general knowledge science & technology

What is the meaning of endurance limit of the material?

It is ultimate tensile strength of the material
It is the limiting stress, below which material can withstand infinite numbeer of cylic loads without failure
It is the minimum permanent deflection caused by the material when it is subjected to 1 million stress reversals
It ration of ultimate strength to yield stregth

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Multiple choice general knowledge science & technology

Which one of the following types of waves are used in a night vision apparatus ?

Radio waves
Microwaves
Infra-red waves
None of the above

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Multiple choice general knowledge science & technology

A person travels 12 km due North, then 15 km duo East, after that 15 km due West and then 18 km due South. How far is he from the starting point"?

6 km
12 km
33 km
60 km

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Multiple choice general knowledge science & technology

If a hole in a disc is 10 mm +0.050 and -0.020 what should be the shaft dimension which will have minimum clearance of 0.018 mm and maximum clearance of 0.110 mm?

9.870 and 10.032
9.982 and 9.890
9.870 and 9.962
9.940 and 9.962

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Multiple choice general knowledge science & technology

In the context of genetic disorders, consider the following : A woman suffers from colour blindness while her husband does not suffer from it. They have a son and a daughter. In this context, which one of the following statements is most probabl) correct ?

Both children suffer from colour blindness.
Daughter suffers from colour blindness while son does not suffer from it.
Both children do not suffer from colour blindness.
Son suffers from colour blrndness while daughter does not suffer from it.

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Multiple choice general knowledge science & technology

Which one of the following is used as an explosive ?

Phosphorus Trichloride
Mercuric oxide
Graphite
Nitroglycerine

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