what happens when the supply frequency to the tube light is reduced to 25Hz...

Categories >> Engineering >> Electrical Engineering
Suggest New Category

what happens when the supply frequency to the tube light is
reduced to 25Hz....?

Question Posted / santhosh27ab

5 Answers
8076 Views
I also Faced
E-Mail Answers

Answers were Sorted based on User's Feedback

what happens when the supply frequency to the tube light is reduced to 25Hz....?..

Answer / md. obaydur rahman

The tube light is flickering and we can see it with open eye.

Is This Answer Correct ?

18 Yes

0 No

what happens when the supply frequency to the tube light is reduced to 25Hz....?..

Answer / al hasib sheikh wasiu

If the supply of frequency is reduced to 25Hz then light will
flickering slowly which can see easily because of much time
require to flicker the bulb.

Is This Answer Correct ?

4 Yes

0 No

what happens when the supply frequency to the tube light is reduced to 25Hz....?..

Answer / k.prakashchandra

But the inductance(impedance) of the choke is reduced to
nearly 50 % and the filaments of the tube may burn out due
to over current.

Is This Answer Correct ?

4 Yes

0 No

what happens when the supply frequency to the tube light is reduced to 25Hz....?..

Answer / neeraj

tube light
will not glow

Is This Answer Correct ?

4 Yes

3 No

what happens when the supply frequency to the tube light is reduced to 25Hz....?..

Answer / mohandas

The choke is designed to generate a particular amount of high voltage when the starter contact breaks the supply to the choke. This high voltage discharges through the filament and in turn ionises the gas in the fluorescent tube. However when you reduce the frequency to 25Hz the high voltage produced by the choke will reduce considerably which may be insufficient to ionise the gas and the tube may not glow.
However if the frequency is reduced when the tube is already on and working the tube will continue to glow but with less luminosity.

Is This Answer Correct ?

0 Yes

0 No

Post New Answer

More Electrical Engineering Interview Questions

What are Directly Exited Generators?

2 Answers

Everybody Knows What is ACB, VCB but anybody tell me what is ST?

7 Answers

How to connect surge arrester with equipment?

1 Answers Godrej,

why motors are rated in HP?

3 Answers HCL, ncpl,

WHAT IS INERTIA,AND WAT IS TORQUE.

0 Answers

WE are using a 63A MCCB(SIEMENS MAKE) for one of the feeder in LV substation panel.It is supplying to a lighting & power socket DB.Settings in the MCCB is Ir = 63 * 1 , Isd = 8 times of Ir , tsd = 0.5 sec( I2 t off). Sometimes this MCCB is tripping .But no trip in DB MCB. Can anybody tell me reason ? From where i can know about the MCCB settings?

5 Answers

What is the function of semicon in 33kv ht cable ?

4 Answers Denson, Finolex,

why there is a humming noise in transformer

8 Answers Bhel,

what perpos use cepacitors in motars,fans,lights,and LT panal

1 Answers

in india single phase is 230v and three phase is 440v but in other countries single phase is 110v and three phase is 380v why..?

2 Answers

Can we use HRC Fuse inplace of Semiconductor fuse?

1 Answers

what is field flash

4 Answers Bhel,

For more Electrical Engineering Interview Questions Click Here