SHAR Pump Operator & Refrigeration & AC Model Question Paper : Satish Dhawan Space Centre
Name of The Organisation : Satish Dhawan Space Centre / SHAR
Name of the Subject : Pump Operator & Refrigeration & AC Model Question Paper
Website : http://www.shar.gov.in/SAMPLES.html
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SHAR Refrigeration & AC Model Question Paper
Pump Operator Cum Mechanic Model Question Paper :
1. Reciprocating pump is used for D
a) Low flow rate and high discharge pressure
b) High flow rate and low discharge pressure
Related :Satish Dhawan Space Centre SHAR Motor Mechanic & Plumber Model Question Paper : www.pdfquestion.in/8144.html
c) High flow rate and high discharge pressure
d) Low flow rate and low discharge pressure
2. What is the purpose of reducer in pipe fittings D
a) To reduce the velocity b) To reduce the flow rate
c) To join different diameter pipes d) To change the direction of pipe line
3. Which among the following is the standard form of pipe thread? D
a) BSP b) BSW c) BSF cl) BA
4. The centrifugal pump in which the pressure is developed wholly D
by centrifugal force is
a) Radial flow b) Mixed flow
c) Axial flow d) Angular flow
5. Multistage centrifugal pumps are used to D
a) Give high discharge b) Produce high heads
c) Pump viscous fluids cl) All of the above
6. The function of a foot valve is D
a) To strain the liquid entering the suction line
b) To isolate suction and discharge line
c) To avoid sudden back flow on stopping forward flow
d) To retain priming intact
7. Specific gravity of water is E]
a) 0.001 b) 0.01 c) 0.1 d) 1
8. Pressure measured with the help of pressure gauge is called I]
a) Atmospheric pressure b) Gauge pressure
c) Absolute pressure d) Mean pressure
9. Discharge of a centrifugal pump is D
a) Directly proportional to N b) Inversely proportional to N
c) Directly proportional to N2 d) Inversely proportional to N2
Pump Operator
1. Critical pressure is the pressure I]
a) Above which explosion of liquid occurs
b) Above which a liquid will remain liquid
c) Above which a liquid turns into vapour
d) Above which a liquid remains only in the liquid state
2. Power consumption of screw compressors compared to D reciprocating compressors is
a) Less b) More c) Equal d) More or equal
3. A 100% relative humidity of air implies that D
a) Wet bulb temperature equals to the dew point temperature
b) Dew point temperature equals to the dry bulb temperature
c) Saturation temperature equals to the dry bulb temperature
d) Dry bulb , Wet bulb, dew point and saturation temperature are equal
4. One ton of refrigeration implies that the machine has a D refrigerating effect (capacity-heat extraction from the system being cooled) equal to
a) 50 kCaI/s b) 50 kCal/min c) 50 kCaI/hr d) 50 kCal/day
5. Which of the following additive is primarily used to avoid water [I freezing at 0° C for usage as secondary refrigerant
a) Hydrochloric acid
b) Glycol
c) Hydro sulphuric acid
d) Carbonic acid
6. Impeller is a part of D
a) Reciprocating compressor b) Centrifugal pump
c) Both a and b d) None of a and b
7. Desert coolers (air coolers) provide more comfort in this hot I]environment
a) High relative humidity
b) Dry climate
c) Humid climate
d) All the above climates
8. Name the instrument used to measure air velocity D
a) Multimeter b) Anemometer c) Thermometer cl) Ammeter
9. Psychometric chart is used to depict D
a) The properties of refrigerant
b) The behavior of air under various air conditioning process
c) The properties of various lubricants
d) The properties of various insulation materials
About Us
Satish Dhawan Space Centre SHAR (SDSC SHAR), Sriharikota, the Spaceport of India, is one of the lead centres of Indian Space Research Organisation (ISRO), Department of Space (DOS), Government of India. The Centre provides world class launch base infrastructure for national and international customers in accomplishing diverse launch vehicle/satellite missions for remote sensing, communication, navigation & scientific purposes and is one among the best known names of the Spaceports of the world today.
The space centre, which was popularly known as SHAR (Sriharikota Range) was renamed as Satish Dhawan Space Centre SHAR on September 5, 2002, in fond memory of Prof. Satish Dhawan, former Chairman of ISRO.