When a _____ is applied to a capacitor, after charging it acts as _____ circuit:

Air cored transformers are used in:

P–N Diodes are also called as _____

_______ in electrical machines is caused by the reluctance of the iron core to change its polarity with change in current direction and resultant changes in magnetic fields

Common indoor levels of nitrogen oxide are _______ or less

Conductance is a term used to denote heat flow through ______ materials

A fluid such as water or air is used to transfer the heat by _____

Quantity of air = _____:

The volume of gas the compressor has to handle _____ as the evaporation temperature falls:

The air-to-air heat pump loses capacity as the outside temperature goes down

Heat pump system can provide both heating and cooling

In the cooling mode of a heat pump, the indoor coil acts as the _____ and the outdoor coil functions as the _______

Refrigerant gas is lighter than air:

Which of the following gas is used for checking the leak in the system:

Semiconductors in their pure state do not conduct electricity well

During combustion process nitrogen oxides are formed in furnace by :