Answer / nadeem

80 mins

Answer / miarcle

100% load means = 20 minutes so
25%load means 4x20minit=80 minits

Answer / gopalakrishnan

50 minutes

for example let us take four fans at 100% load for 20 minutes.
100% load means 4 fans = 20 minutes
75% load means 3 fans = 30 minutes
50% load means 2 fans = 40 minutes
25% load means 1 fan = 50 minutes

Answer / sathya

50 min

Answer / prakash kusuma

at 25% load a 6kva UPS give back up of 50 min
as at 100% = 20 min ok
50% = 40 min
25% = 50 min (40 min + 20 min = 60 min(no load)
- 10 min(25 % load )= 50 min( back up)

Answer / bibhu(bbb)

80min
100% load =20min
1% load=20*100 min
25% load=(20*100)/25min.

Answer / miracle

100% load means = 20 minutes so 25%x20minit=80 minits

Answer / jayesh

50 min
20min = 100% load
? = 25% load
=20*25/100
=50 min

Answer / symon

80 mints

Answer / s kumar

If 6 Kva UPS given 20 min. backup at 100%load
backup at (50%)100/2------20*2=40min
backup at (25%)100/4------20*4=80min

Then 80 min. Backup at 25 %load

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