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WorksheetsFlow & Flame Quiz Series Week 4
Total questions: 20
Worksheet time: 15mins
The COP of a Carnot refrigerator operating between 300 K and 270K is:
9
10
11
12
In a vapor compression cycle, the refrigerant enters the evaporator as:
High-pressure gas
Low-pressure liquid
High-pressure liquid
Low-pressure vapour
Creep is the property of a material to:
Deform permanently under sudden load
Deform overtime under constant load
Resist sudden shocks
Conduct electricity
Which of the following is a boiler mounting?
Economizer
Superheater
Fusible plug
Air preheater
Heat and work are:
Forms of matter
Properties of a system
Mechanisms of energy transfer
Stored in the system
Which of the following machining processes involves material removal primarily through ablation?
Abrasive Jet Machining
Chemical Machining
Electrochemical Machining
Laser Beam Machining
If 500 kJ of heat is removed from a refrigerated space in 10 minutes, what is the refrigeration capacity in kW?
0.5 kW
0.83 kW
5 kW
50 kW
Which property of air indicates the amount of moisture present in it?
Dry bulb temperature
Wet bulb temperature
Relative humidity
Atmospheric pressure
The primary mode of heat transfer in a vacuum is:
Conduction
Convection
Radiation
All of the above
A Pitot tube is used to measure:
Static pressure
Dynamic pressure
Velocity of flow
Volumetric flow rate
Which property is represented on the x-axis of a psychrometric chart?
Dry-bulb temperature
Wet-bulb temperature
Relative humidity
Specific volume
The full form of ISHRAE is:
Indian Society of Heating, Refrigeration and Air Conditioning Engineers
Indian Society of Heating, Refrigerating and Air Conditioning Engineers
International Society of Heating, Refrigeration and Airflow Engineers
Institute of Systems for Heating, Refrigeration and Air Conditioning Engineers
Euler's formula for buckling load applies to:
Short columns
Long, slender columns
Beams only
Thick plates
The primary purpose of intercooling in a multi-stage compression system is to:
Increase discharge temperature
Reduce work input and improve efficiency
Decrease refrigerant mass flow rate
Eliminate the need for condensation
In hot rolling, the neutral point is defined as:
The point where no deformation occurs
The point where the strip velocity equals roll velocity
The point of maximum thickness reduction
The location where roll separating force is maximum
The use of a flash chamber in a multi-stage refrigeration system helps to:
Increase throttling losses
Remove moisture from refrigerant
Separate vapor from liquid to improve efficiency
Decrease condenser capacity
The effect of sub-cooling the liquid refrigerant before expansion is:
Decreases refrigeration effect and COP
Increases refrigeration effect but decreases COP
Increases both refrigeration effect and COP
Decreases refrigeration effect but increases COP
The mean effective pressure (MEP) in an internal combustion engine is useful to determine:
Engine efficiency
Work output per cycle
Fuel consumption
Compression ratio
In a hydraulic system, Pascal's law implies that:
Pressure is transmitted unequally in all directions
Pressure decreases with depth
Pressure is transmitted undiminished in all directions
Only pressure at the input is effective
In Bernoulli's equation, viscous losses are:
Included
Neglected
Partially included
Independent of velocity
