ILLUMINATION QUIZ

Illumination can be expressed in

lux.

lumens.

candela.

radians.

TRUE ANSWER : ?
YOUR ANSWER : ?

Solid angle is expressed in terms of

radians.

radians / meter.

degree.

steredians.

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YOUR ANSWER : ?

Which lamp is best suited for lighting an International sports arena?

Metal Halide

LED

Incandescent

Compact Fluorescent

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Luminous efficiency of a fluorescence lamp is

40 lumens / watt.

60 lumens / watt.

30 lumens / watt.

70 lumens / watt.

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YOUR ANSWER : ?

Which lamps can be directly connected to a solar cell?

Incandescent

Metal Halide

Compact Fluorescent

LED

TRUE ANSWER : ?
YOUR ANSWER : ?

Unit of luminous flux is

candela.

steradians.

lux.

lumens.

TRUE ANSWER : ?
YOUR ANSWER : ?

Which lamp has a negative Colour Rendering Index (CRI)?

High pressure sodium vapour

Low pressure sodium vapour

Fluorescent

LED

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YOUR ANSWER : ?

Wave length for red colour is around

500 nm.

600 nm.

700 nm.

400 nm.

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The illumination of the surface varies directly with cosine of the angle between normal to surface and direction of the inclined light is given by

law of square inverse.

Lambert’s cosine law.

both A and B.

None of these

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YOUR ANSWER : ?

Which lamp has the best Colour Rendering Index (CRI)?

High pressure sodium vapour

Incandescent

LED

Fluorescent

TRUE ANSWER : ?
YOUR ANSWER : ?

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