Top 80+ Solved Electric Energy Generation Utilization and Conservation MCQ Questions Answer
Q. Which of the following instruments is used for the comparison of candle powers of different sources?
a. radiometer
b. bunsen meter
c. photometer
d. candle meter
Q. Which of the following lamp has minimum initial cost of installation but maximum running cost ?
a. incandescent
b. fluorescent
c. mercury vapour
d. sodium vapour.
Q. Candela is the unit of which of the following?
a. wavelength
b. luminous intensity
c. luminous flux
d. frequency
Q. Illumination of one lumen per sq. metre is called
a. lumen metre
b. lux
c. foot candle
d. candela
Q. Filament lamps operate normally at a power factor of
a. 0.5 lagging
b. 0.8 lagging
c. unity
d. 0.8 leading
Q. Which of the following lamps is the cheapest for the same wattage?
a. fluorescent tube
b. mercury vapour lamp
c. gls lamp
d. sodium vapour lamp
Q. On which of the following factors dies the depreciation or maintenance factor depend?
a. lamp cleaning schedule
b. ageing of the lamp
c. type of work carried out at the premises
d. all of the above factors
Q. For the same lumen output, the running cost of the fluorescent lamp is
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
Q. The flicker effect of fluorescent lamps is more pronounced at
a. lower frequencies
b. higher frequencies
c. lower voltages
d. higher voltages
Q. ...... is a cold cathode lamp.
a. fluorescent lamp
b. neon lamp
c. mercury vapour lamp
d. sodium vapour lamp