For Patient Audience

@

ACREX 2012 Quiz, Bangalore

Organised by ISHRAE

- Mohan Reddy

Audience Question

1. Name the scientists who received Nobel prize for finding Chlorine element released by halogenated hydrocarbons was adversely affecting Ozone layer?

Answer

F S Rowland & M J Moulina

Audience Question

In 2004 as per Henry Ford Poll conducted in US, which was the top of top 10 innovative ideas of last eighty years?

Answer

1. Airconditioning

2. Pencillin

3. The Personal Computer

4. Global Positioning Satellites

5. Cell phones

6. Broadcast Televisions

7. Social Security Act

8. The Internet

9. Frozen Food

10.The Polio Vaccine

Audience Question

How many Kilometers a 2 lt engine car has to travel to have emissions equivalent to 1 kg R404A refrigerant leakage?

A) 3km

B) 100km

C) 1 Million Km

D) 30,000 Km

Answer

Answer: 30,000 Km . GWP of R404A is 3800

Audience Question

What is LMTD?

Answer

Logarthmic mean temperature difference

Audience Question

What is the difference between these 2 curves

Answer

Left is Natural scale PH curve

Right is logarthmic scale PH Curve

Audience Question

Name the company started by Lal Bhai and later acquired by leading Japanese group?

Answer

Amtrex acquired by Hitachi

Audience Question

Material used in Magnetic refrigeration?

Answer

GADOLINIUM

Audience Question

Oil free bearing works on principle of

Answer

Magnetic levitation

Audience Question

What type of motor used in electronic expansion valve

Answer

Stepper motor

Audience Question

Which is most promising renewable energy source for airconditioning?

Answer

Geothermal

Audience Question

Abbreviate DIDW of fans

Answer

Double inlet double width

Audience Question

In which type of ducting pressure drop is lower?

Answer

Spiral

Audience Question

What is used to connect diffuser and duct?

Answer

Flexible duct

Audience Question

What component is used to have individual control of air volume in central air conditioning systems?

Answer

VAV