DIRECT EXPANSION AIR CONDITIONING - Practice Mode

1) Which tool is used for descaling the condenser tubes in shell and tube condenser?

Steel brush Brass brush Sponge brush Teflon fibre brush

Correct Answer: Brass brush

2) What is the expansion of PMV used in VRV system?

Prime Mover Valve Pass Modulate Valve Phase Modulate Valve Pulse Modulating Valve

Correct Answer: Pulse Modulating Valve

3) Which electronic component senses the temperature in indoor unit of VRV system?

Resistor Thyristor Transistor Thermistor

Correct Answer: Thermistor

4) Which type of AC system is operated by VRV system?

Package AC Central plant AC Multizone split ACs Indirect ACs

Correct Answer: Multizone split ACs

5) Which set of components are used in FCU?

Air filter, blower, condenser Compressor, fan, condenser Air filter, cooling coil, blower motor Cooling coil, condenser, fan motor

Correct Answer: Air filter, cooling coil, blower motor

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