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4

Match the following:
A. Anemometer1. Measurement of power
B. Tachometer2. Wind speed
C. Dynamometer3. Revolutions per minute
D. Barometer4. Atmospheric pressure
*5. Current from a dynamo

A. A-1 B-3 C-5 D-4

B. A-2 B-1 C-3 D-4

C. A-2 B-3 C-1 D-4

D. A-1 B-3 C-5 D-2

Correct Answer :

C. A-2 B-3 C-1 D-4


Related Questions

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4

On the Kelvin scale, the melting point of ice is

A. 0 K

B. 273 K

C. 373 K

D. 100 K

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4

A pair of stars that revolve round each other is

A. a neutron star

B. a binary star

C. a dwarf star

D. a polar star

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4

A lactometer is used to

A. find out the specific gravity of liquids

B. measure the volumes of liquids

C. test the purity of milk

D. determine the strength of acid in car batteries

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4

Galaxies emit

A. radio waves and X-rays

B. ultraviolet light waves

C. visible light waves

D. All the above

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4

Before the invention of geostationary satellites, television stations could not transmit their programmes to far off places because

A. these signals are electromagnetic in nature

B. these are not electromagnetic in nature

C. their wavelength is very large

D. they are not reflected by the ionosphere but pass through it

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4

A balloon ruled with hydrogen will

A. continue going upwards uninterrupted

B. reach a particular height and remain floating

C. burst after reaching some height

D. reach a particular height and start coming down

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4

In a refrigerator, the refrigerant is

A. Nitrogen

B. Oxygen

C. Chlorine

D. Freon

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4

The mirage is a phenomenon

A. generally considered as a desert happening

B. caused by unequal heating of the several layers of the atmosphere above the desert

C. in which the refracted rays take a curved path resulting in total internal refection

D. All the above

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4

Why is it cool near an open pond on a hot summer day?

A. Evaporation at the surface causes cooling

B. The heat obsorbed at the surface is passed on to the bottom

C. Because of impurity in the water

D. Because of convection currents set up inside water

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4

For viewing objects placed at a higher level from a position at a lower level, the instrument used' Is known aa

A. telescope

B. spectrometer

C. microscope

D. periscope

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4

The frequency of an ultrasonic wave is

A. the same as that of an audible sound

B. above the audible range

C. below the audible range

D. None of the above

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4

The sun continuously produces an enormous amount of energy. This is due to

A. nuclear fission

B. nuclear fusion

C. chemical combustion

D. boiling

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4

Formation of shadows can be explained by

A. rectilinear propagation of light

B. reflection

C. refraction

D. total internal reflection

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4

The method used to separate aluminium from a alumina is

A. electroplating

B. electrotyping

C. electrolysis

D. distillation

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4

In experiments on static electricity the standard method for obtaining small amounts of positive electricity is to rub

A. a glass rod with flannel

B. an abonite rod with flannel

C. a glass rod with silk

D. Any of the above

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4

The attraction of unlike molecules at the common surface is known as

A. adhesion

B. cohesion

C. surface tension

D. capillarity

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4

Isotones are species of atoms containing

A. same number of protons but different number of neutrons

B. same number of neutrons but different number of protons

C. the same total number of protons and neutrons

D. same number of protons and different number of electrons

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4

Air pressure is usually highest when the air is

A. warm and moist

B. cool and dry

C. warm and dry

D. cool and moist

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4

The end product in the uranium disintegration series is

A. lead

B. zinc

C. carbon

D. tin

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4

When a whistling engine approaches a person standing on the platform, the frequency or the note

A. appears to increase

B. appears to decrease

C. does not change at all

D. first increases then decreases

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4

Which of the following wires of same dimensions offers least resistance to the ,flow of current?

A. copper

B. aluminium

C. silver

D. nichrome

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4

The instrument used to measure the strength of electric current at a point is

A. Ammeter

B. Altimeter

C. Adrinometer

D. Anemometer

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4

When a body is partly or wholly immersed in a liquid the apparent loss of weight is equal to the weight of the liquid displaced by the submerged portion. This is known as

A. Pascal's law

B. Bernoulli's law

C. Archimedes' law

D. Boyle's law

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4

Hot water is poured simultaneously in four metallic tumblers painted outside with different paints. After some time the water will be found to have cooled most in the tumbler painted.

A. rough white

B. rough black

C. shining white

D. shining black

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4

While crossing a suspension bridge, the soldiers are ordered to break steps because

A. the marching in steps will involve a big strain on them

B. the resonant vibrations caused by their marching can damage the bridge increasing the amplitude to dangerous proportions

C. the marching may obstruct other traffic

D. rumblings of their marching may disturb the surroundings

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4

Increase in pressure

A. increases the melting point of ice

B. decreases the melting point of ice

C. has no effect on the melting point of ice

D. increases the volume of the ice

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4

Why is nuclear fusion also known as thermonuclear reaction?

A. Fusion converts nuclear energy into heat

B. Fusion demands conditions of extremely high temperature to produce it

C. Fusion produces large amount of heat

D. Fusion reactions takes place in the sun

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4

Photoelectric cell is a device which converts

A. light energy into electrical energy

B. electrical energy into light energy

C. magnetic energy into electrical energy

D. electrical energy into mechanical energy

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4

When one enters a dark room after being in bright light one is not able to see anything clearly for a while because

A. the retina of the eye moves forward

B. the retina of the eye moves backward

C. c).the iris is unable to dilate the pupil immediately to be able to see things

D. the eye has no power of accommodation

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4

Acoustics is a property or

A. Physics

B. Chemistry

C. Biology

D. Economic