|
In sodium vapour lamp neon gas ___
|
|
0
|
320
|
October 10, 2021
|
|
Co-efficient of utilisation depends upon ___
|
|
0
|
125
|
October 10, 2021
|
|
Which of the following bulbs operates on least power?
|
|
0
|
163
|
October 10, 2021
|
|
For precision work the illumination 'level required is of ___
|
|
0
|
340
|
October 10, 2021
|
|
Which of the following instruments is used for the comparison of candle powers of different sources?
|
|
0
|
459
|
October 10, 2021
|
|
In lighting circuit using filament lamps 1% voltage drop results ___
|
|
0
|
219
|
October 10, 2021
|
|
What percentage of the input energy is radiated by filament lamps?
|
|
0
|
304
|
October 10, 2021
|