Objective questions > Multiple choice Questions of electrical Illumination (16-30):

16.

You are watching: The output of a tungsten filament lamp depends on

typical wattage the 3 ft. Fluorescent tube is

(A) 10 W

(B) 40 W

(C) 65 W

(D) 100 W.

gain Answer

17. because that the very same wastage which lamp is cheapest ?

(A) salt vapor lamp

(B) Mercury vapor lamp

(C) Fluorescent pipe

(D) GLS lamps.

obtain Answer

18. Optical instruments used because that the to compare of candle strength of various sources arc known as

(A) Candle meter

(B) Radio meters

(C) Bunsen meter

(D) photograph meter.

acquire Answer

19. i m sorry photometer is supplied for to compare the lights of various colors ?

(A) Bunson photometer

(B) Grease spot photometer

(C) Lummer Brodhum photometer

(D) Guilds Flicker Photometer.

get Answer

20. which photometer counts for its operation on Lambert"s cosine legislation ?

(A) Macbeth lllumino meter

(B) Trotter Illumination Photometer

(C) Lummer Brodhum Photometer

(C) Guild"s Flicker Photometer.

acquire Answer

21. i beg your pardon photometer relies for its operation on train station Square regulation ?

(A) Guilds Flicker Photometer

(B) Lummer Brodhum Photometer

(C) Macbeth llluminometer

(D) Trotter Illumination Photometer.

obtain Answer

22. The color temperature of day irradiate is roughly

(A) 50 K

(B) 160 K

(C) 600 K

(D) 6000 K.

get Answer

23. light is developed in electrical discharge lamps through

(A) heating result of current

(B) magnetic impact of current

(C) ionization in a gas or vapor

(D) carbon electrodes.

get Answer

24. Lumen/watt is the unit the

(A) light flux

(B) Luminous soot

(C) Brightness

(D) Luminous efficiency.

obtain Answer

25. Candela is-the unit because that

(A) light flux

(B) Luminous intensity

(C) Brightness

(D) Luminous efficiency.

get Answer

26. i m sorry gas is occasionally used in filament lamps ?

(A) Argon

(B) Krypton

(C) Nitrogen

(D) Carbon dioxide.

obtain Answer

27. Which bulb operates on lowest power ?

(A) Night bulb

(B) Neon pear

(C) GLS bulb

(D) Torch bulb.

acquire Answer

28. The calculation of a tungsten filament lamp relies on

(A) dimension of lamp

(B) size of shell

(C) temperature that filament

(D) all of the above.

gain Answer

29. A zero watt lamp consumes

(A) no strength

(B) about 5 to 7 W strength

(C) about 15 come W strength

(D) about 25 come 30 W power.

obtain Answer

30.

See more: Tecumseh 10 Hp Engine Spark Plug, Ngk Spark Plugs For Tecumseh Engines

melt temperature the tungsten is

(A) 2000°K

(B) 2500°K

(C)2655°K

(D) 3655°K.

acquire Answer
16.B -----17.D ----- 18.D ----- 19.D ----- 20.B ----- 21.C ----- 22.D ----- 23.C -----24.D -----25.B -----26.A ----- 27.D -----28.C -----29.B ----- 30.D
Q 1- 15 Q 16- 30
Q 31- 45 Q 46- 60
Q 61- 75 Q 76- 90
Q 91- 105 Q 106- 120
Q 121- 135 Q 136- 150