A 1000 kVA ONAN cooled transformer has a load of 500 kVA throughout the day except for a period of 4 hours. What is the permissible overload for a duration of four hours. Assume the permissible load kVA as a fraction of rated kVA is 1.24.

Permissible overload = Full load kVA*factor for permissible load
= 1000*1.24
= 1240 kVA

The wind speed increases with height because of

Wind speed increases as the height from the ground increases mainly due to the decrease in the friction produced by land terrain.

Which of the following is an application layer service?

In the circuit shown in figure, the voltage across 8 Ω resistor is 20 V. Calculate the supply voltage.

Equivalent resistance of the circuit,
Req = (12||18) + 8
Req = 7.2 + 8
Req = 15.2 ohm
Source current = current through 8 ohm resistor, I = Vr/R8
I = 20/8
I = 2.5 A
Supply votage V = I*Req
V = 2.5*15.2
V = 38 V

Match the following shown in figure

What is the full form of UN in 'UN Human Rights Prize'?