Related Questions

Domestic refrigerator usually works on the __________ refrigeration cycle.
A Carnot
B Air
C Absorption
D Vapour-ejection
A survey of City A found an average of 3.2 people per household and an average of 1.2 DVD players per household . If 48,000 people live in City A, how many DVD players are there in City A?
A 15,000
B 16,000
C 18,000
D 40,000
The Carnot co-efficient of performance (COP) of a domestic air conditioner compared to a household refrigerator is
A Less
B More
C Same
D Dependent on climatic conditions
One fourth the price of a TV is equal to 1/6th the price of a refrigerator. If the total cost of the TV and the refrigerator is Tk 60000, what is the price of the TV?
A Tk 22000
B Tk 24000
C Tk 27500
D None of these
One Ton of Refrigeration is equal to the refrigeration effect corresponding to melting of 1000 kg of ice---
A In 1 hour
B In 24 hour
C In 10 minutes
D In 12 hour
A refrigeration cycle is a reversed heat engine. Which of the following has the maximum value of the co-efficient of performance (COP) for a given refrigeration effect?
A Vapor compression cycle using expansion valve
B Air refrigeration cycle
C Vapor compression cycle using expansion engine
D Carnot refrigeration cycle
The most important consideration, while designing the refrigeration system of an aircraft is that the refrigeration system
A Is as light as possible
B Has very high C.O.P
C Employs minimum quantity of refrigerant
D Consumer minimum horse power
Pressure-enthalpy chart is useful in refrigeration. The change in internal energy of an ideal fluid used in ideal refrigeration cycle is
A Positive
B Negative
C Zero
D Infinity
Capacity (in tons/hr) of jaw/gyratory crusher is equal to (where, L = length of the receiving opening, cm S = greater width of the discharge opening, cm)
A 0.01 L.S
B 0.087 L.S
C L.S
D $$\frac{{{\text{L}}.{\text{S}}}}{{0.087}}$$
The capacity of a domestic refrigerator is in the range of
A 0.1 to 0.3 TR
B 1 to 3 TR
C 3 to 5 TR
D 5 to 7 TR

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