Question 1

The unit of luminous flux is .

Accepted Answer

A) watt/m2 
B) lumen 
C) lumen/m2 
D) watt 
A) watt/m2 
B) lumen 
C) lumen/m2 
D) watt

Question 2

Which gas can be filled in GLS lamps?

Accepted Answer

A) oxygen 
B) carbon dioxide 
C) xenon 
D) any inert gas 
A) oxygen 
B) carbon dioxide 
C) xenon 
D) any inert gas

Question 3

For the same lumen output, the running cost of the fluorescent lamp is

Accepted Answer

A) equal to that of filament lamp 
B) less than that of filament lamp 
C) more than that of filament lamp 
D) any of the above 
A) equal to that of filament lamp 
B) less than that of filament lamp 
C) more than that of filament lamp 
D) any of the above

Question 4

Which of the following lamp has minimum initial cost of installation but maximum running cost ?

Accepted Answer

A) incandescent 
B) fluorescent 
C) mercury vapour 
D) sodium vapour. 
A) incandescent 
B) fluorescent 
C) mercury vapour 
D) sodium vapour.

The unit of luminous flux is .

Which gas can be filled in GLS lamps?

For the same lumen output, the running cost of the fluorescent lamp is

Which of the following lamp has minimum initial cost of installation but maximum running cost ?

HVAC and Heating Systems: Understanding Compressors, Cooling Towers, Filters, and Heat Transfer Methods

Thermal Conductivity, Welding, and Locomotives

Understanding Grounding and Earthing in Electrical Systems

Filters

Exam 1: Lighting and Refrigeration Systems

The unit of luminous flux is .

Which gas can be filled in GLS lamps?

For the same lumen output, the running cost of the fluorescent lamp is

Which of the following lamp has minimum initial cost of installation but maximum running cost ?

HVAC and Heating Systems: Understanding Compressors, Cooling Towers, Filters, and Heat Transfer Methods

Thermal Conductivity, Welding, and Locomotives

Understanding Grounding and Earthing in Electrical Systems

Filters