The flicker effect of fluorescent lamps is more pronounced at
A) lower frequencies
B) higher frequencies
C) lower voltages
D) higher voltages
Correct Answer:
Verified
Q9: The unit of luminous flux is .
A)watt/m2
B)lumen
C)lumen/m2
D)watt
Q10: Filament lamps operate normally at a power
Q11: Which of the following lamps is the
Q12: On which of the following factors dies
Q13: For the same lumen output, the running
Q15: ...... is a cold cathode lamp.
A)fluorescent lamp
B)neon
Q16: For normal reading the illumination level required
Q17: Which gas can be filled in GLS
Q18: Which of the following is not the
Q19: The refrigerants which are first cooled by-----------------refrigerants
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