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 Physics Questions

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Q:

The taper on the lathe spindle is

A) 1 in 10 B) 1 in 20
C) 1 in 15 D) 1 in 25
 
Answer & Explanation Answer: B) 1 in 20

Explanation:
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Q:

The substances which reduce friction are called _________.

A) irregularities B) lubricants
C) adhesives D) viscous
 
Answer & Explanation Answer: B) lubricants

Explanation:
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Q:

After removing two electrons from helium atom it become?

A) UV rays B) Alpha particle
C) Gama particle D) X rays
 
Answer & Explanation Answer: B) Alpha particle

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Q:

In order to make an electromagnet you need a

A) Dry cell batteries B) Thin coated copper wire
C) Iron nail D) All of the above
 
Answer & Explanation Answer: D) All of the above

Explanation:

To create a simple electromagnet, you'll need a source of electricity, a conductor, and metal. Wrap insulated copper wire tightly around an iron screw or nail before connecting the wire to a battery, and watch as your new electromagnet picks up small metal objects.

 

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Q:

Which of these instruments is used to measure the wind speed?

A) Anemometer B) Inclinometer
C) Fathometer D) Calorimeter
 
Answer & Explanation Answer: A) Anemometer

Explanation:

Anemometer is the instrument that is used for measuring the speed of wind or any gas currents.

Which_of_these_instruments_is_used_to_measure_the_wind_speed1560165843.jpg image

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3 1740
Q:

Instrument for measuring light intensity is called

A) Lucimeter B) Cryometer
C) Cyanometer D) Barometer
 
Answer & Explanation Answer: A) Lucimeter

Explanation:
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0 1728
Q:

Speed regulation of synchronous motor is

A) 1% B) 25%
C) Zero D) 0.5%
 
Answer & Explanation Answer: C) Zero

Explanation:

speed_regulation_of_synchronous_motor1553077296.jpg image

Synchronous motor is a motor which runs at a constant speed irrespective of load attached to it. So the speed regulation of synchronous motor is ZERO.

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5 1727
Q:

An electric fuse is based on

A) the chemical effect of the current B) the magnetic effect of the current
C) the heating effect of the current D) All of the above
 
Answer & Explanation Answer: C) the heating effect of the current

Explanation:

An electric fuse is based on the heating effect of the current.

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