Related Questions

If a man cycles at 10 km/hr, then he arrives at a certain place at 1 pm. If he cycles at 15 km/hr, he will arrive at the same place at 11 am. At what speed must he cycles to get there at noon?
A 11 km/hr
B 12 km / hr
C 13 km / hr
D 14 km / hr
If a man cycles at 10 km/hr , then he arrives at a certain place at 1 pm . If he cycles at 15km/hr, arrive at the same place at 11am . At what speed must he cycels to get there at noon ?
A 11km/hr
B 12km/hr
C 13km/hr
D 14km/hr
In air-conditioning of aeroplanes, using air as a refrigerant, the cycle used is
A Reversed Carnot cycle
B Reversed Joule cycle
C Reversed Brayton cycle
D Reversed Otto cycle
Absorption system normally uses the following refrigerant
A Freon-11
B Freon-22
C CO2
D Ammonia
A vapour absorption refrigerator uses _________ as a refrigerant.
A Water
B Ammonia
C Freon
D Aqua-ammonia
Which of the following uses a lot of CPU cycles?
A GUI
B Statically generated graphics
C Dynamically generated graphics
D Generic scoping
which of the following refrigerant has the lowest freezing point?
A Freon -11
B Freon -12
C Freon -22
D Ammonia
Which of the following statement is correct for ammonia as a refrigerant?
A It is toxic to mucous membranes.
B It requires large displacement per TR compared to fluoro carbons.
C It reacts with copper and its alloys.
D All of these
Which of the following is an undesirable characteristics of a refrigerant ?
A It should be non-explosive
B It should have a sub-atmospheric vapor pressure at the temperature in refrigerator coils
C Its vapor pressure at the condenser temperature should be very high
D None of these
Which of the following is not a common refrigerant?
A Freon-12
B Ethylene
C Ammonia
D Carbon dioxide

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