Technician Grade II Refrigeration Mechanic Recruitment Exam Solved Question Paper download

Technician Grade II Refrigeration Mechanic Recruitment Exam Solved Question Paper-100 Questions

The Technician Grade II (Refrigeration Mechanic) Recruitment Exam Solved Question Paper is published by rightjobalert.com , there are 100 questions related to Technician Grade II (Refrigeration Mechanic). The Answers for the following question papers available below each questions. you can download the pdf question file.

Name of the Exam: Technician Grade II (Refrigeration Mechanic)

Question Paper file format: Pdf/Png/Jpeg

No. of Questions: 100

Answer Key: Available

Downloadable? Yes Downloadable Solved Question Paper

Technician Grade II Refrigeration Mechanic Recruitment Exam Solved Question Paper download Page 2 Question No. 1-10

Question #1:- A centrifugal compressor is also called
A:-Turbo compressor
B:-Radial compressor
C:-Scroll compressor
D:-Both (1) and (2)
Correct Answer:- Option-D

Question #2:-The best way of avoiding accidents is by
A:-Doing work in ancient way
B:-Doing work in one’s own way
C:-Observing safety rules related to job, machine and work place
D:-Using safety equipment
Correct Answer:- Option-C

Question #3:-What is smoothering in fire extinguishing ?
A:-Pouring of CTC
B:-Flashing with dry powder
C:-Use water to low temperature
D:-Stop the supply of oxygen
Correct Answer:- Option-D

Question #4:-An outside micrometer has a negative error. The correct reading can be taken by
A:-Adding the negative error in the actual reading.
B:-Deducting the negative error from the actual reading
C:-Adding twice the negative error in the actual reading.
D:-Deducting twice the negative error from the actual reading.
Correct Answer:- Option-A

Question #5:-Which type of taper is provided in the drill shank ?
A:-Pin taper
B:-Metric taper
C:-Morse taper
D:-Jerno taper
Correct Answer:- Option-C

Question #6:-Why the cutting faces of files are slightly bellied on lengthwise ?
A:-Get proper grip over workpiece
B:-Filing flat surfaces is made easier
C:-Permit clearance between file face and the workpiece
D:-Ensure more pressure on workpiece while filing
Correct Answer:- Option-B

Question #7:-Which one of the following sheets is used for making highly corrosive acid tanks ?
A:-Black iron sheets
B:-Galvanised iron sheets
C:-Stainless steel sheets
D:-Lead sheets
Correct Answer:- Option-D

Question #8:-What is the use of feeler gauge ?
A:-Check the width
B:-Check the height
C:-Check the length
D:-Check the gap between the mating parts
Correct Answer:- Option-D

Question #9:-Which type of screw threads are rounded at the crest and root ?
A:-B.A. thread
B:-B.S.F. thread
C:-B.S.W. thread
D:-A.C.M.E. thread
Correct Answer:- Option-B
Question #10:-Which tool is used for trimming the edges of a sheet metal cylinder ?
A:-Straight snips
B:-Bent snips
C:-Tube cutter
D:-Scissors
Correct Answer:- Option-B

Technician Grade II (Refrigeration Mechanic) Recruitment Exam Solved Question Paper Page 2 Question No. 11-20

Question #11:-The diode used for voltage regulation is
A:-Rectifier diode
B:-Zener diode
C:-Signal diode
D:-Varicap diode
Correct Answer:- Option-B
Question #12:-Which tool is used for bending, seaming and forming of sheet metal ?
A:-Bench vice
B:-Hand vice
C:-Stakes
D:-Shear
Correct Answer:- Option-C

Question #13:-One of the functions of electrode coating is
A:-To increase welding current
B:-To stabilize the arc
C:-To prevent rusting
D:-To control arc temperature
Correct Answer:- Option-B

Question #14:-The correct flame for preheating before cutting is
A:-Oxidizing flame
B:-Neutral flame
C:-Carburizing flame
D:-Slightly carburizing flame
Correct Answer:- Option-B
Question #15:-What is the tool used to remove slag from the welding ?
A:-Tongs
B:-Chipping hammer
C:-Cross pean hammer
D:-Ball pean hammer
Correct Answer:- Option-B
Question #16:-Which motor has the least starting torque ?
A:-CSIR
B:-CSR
C:-RSIR
D:-PSC
Correct Answer:- Option-C
Question #17:-The squirel cage three phase induction motor is started by
A:-DOL starter
B:-Star Delta starter
C:-Both (1) and (2)
D:-Stator-Rotor starter
Correct Answer:- Option-C
Question #18:-Which electronic component is the voltage regulator ?
A:-Zener diode
B:-Transistor
C:-Triac
D:-Diac
Correct Answer:- Option-A
Question #19:-Which gas is produced by the chemical reaction of carbide and water ?
A:-Oxygen
B:-Nitrogen
C:-Acetylene
D:-Carbondioxide
Correct Answer:- Option-C
Question #20:-A flaring tool consist of
A:-Flaring block and yoke
B:-Flaring cone and block
C:-Flaring bush and cone
D:-Flaring cone and yoke
Correct Answer:- Option-A

Technician Grade II (Refrigeration Mechanic) Recruitment Exam Solved Question Paper Page 3 Question No. 21-30

Question #21:-The size of tube cutter can be specified by
A:-Length of tube cutter
B:-Cutting wheel size
C:-Maximum diameter of tube which it can cut
D:-Cutting wheel thickness
Correct Answer:- Option-C
Question #22:-A lever type tube bender can form bends up to
A:-90°
B:-135º
C:-45º
D:-180º
Correct Answer:- Option-D
Question #23:-Pinching tool is used for
A:-Enlarging copper tube ends
B:-Remove burrs from tube end
C:-Sealing or closing the copper tubes
D:-Fixing copper tubes in swaging tool
Correct Answer:- Option-C
Question #24:-Heat required to increase the temperature of 1 gram of water by 1 degree centigrade is called
A:-Calorie
B:-BTU
C:-CHU
D:-None of these
Correct Answer:- Option-A
Question #25:-The boiling point of water in Fahrenheit scale is
A:-100º
B:-232º
C:-212°
D:-32º
Correct Answer:- Option-C
Question #26:-The freezing point of mercury is
A:-− 45ºC
B:-– 39ºC
C:-– 4ºC
D:-– 20ºC
Correct Answer:- Option-B
Question #27:-The heat required for changing the state of any object without changing its temperature is called
A:-Sensible heat
B:-Latent heat
C:-Specific heat
D:-None of these
Correct Answer:- Option-B
Question #28:-Which thermodynamic law presents the concept of temperature ?
A:-Zeroth law
B:-First law
C:-Second Law
D:-Third law
Correct Answer:- Option-A
Question #29:-Dry ice is
A:-Solid carbon dioxide
B:-Solid nitrogen
C:-Solid hydrogen
D:-Solid oxygen
Correct Answer:- Option-A
Question #30:-The liquid refrigeration system is also called
A:-Chemical refrigeration system
B:-Expandable refrigeration system
C:-Water vapour system
D:-Both (1) and (2)
Correct Answer:- Option-D

Technician Grade II (Refrigeration Mechanic) Recruitment Exam Solved Question Paper Page 2 Question No. 31-40

Question #31:-In vapour absorption system which energy is used ?
A:-Mechanical energy
B:-Heat energy
C:-Chemical energy
D:-Potential energy
Correct Answer:- Option-B
Question #32:-The cylinder volume between TDC and BDC is known as
A:-Clearance volume
B:-Total volume
C:-Swept volume
D:-All of these
Correct Answer:- Option-C
Question #33:-In natural cooling tower, its sides are
A:-Closed
B:-Opened
C:-Partially opened
D:-None of these
Correct Answer:- Option-B
Question #34:-An example of dynamic compressor is
A:-Rotary vane compressor
B:-Reciprocating compressor
C:-Rotary scroll compressor
D:-Centrifugal compressor
Correct Answer:- Option-D
Question #35:-Rotary screw compressor is used for industrial and commercial applications with a capacity range of
A:-5 to 10 tons
B:-20 to 750 tons
C:-11 to 15 tons
D:-Above 1000 tons
Correct Answer:- Option-B
Question #36:-The size of the gasket specified by its
A:-Material
B:-Thickness
C:-Strength
D:-Both (1) and (3)
Correct Answer:- Option-B
Question #37:-The main disadvantage of water cooled condenser is
A:-Expensive
B:-Low heat transfer rate
C:-Used in low capacity plants
D:-They have fans mounted in them
Correct Answer:- Option-A
Question38:-The condenser both air and water used as cooling medium is
A:-Evaporative condenser
B:-Plate type condenser
C:-Shell and coil condenser
D:-Shell and tube condenser
Correct Answer:- Option-A
Question #39:-The efficiency of condenser increases due to
A:-De scaling
B:-Scaling
C:-Painting
D:-Both (2) and (3)
Correct Answer:- Option-A
Question #40:-The device which divides the high pressure side and the low pressure side of a refrigerating system is known as
A:-Condenser
B:-Evaporator
C:-Receiver
D:-Expansion device
Correct Answer:- Option-D

Technician Grade II Refrigeration Mechanic Recruitment Exam Solved Question Paper download Page 5 Question No. 41-50

Question #41:-In hard water the calcium carbonate contents is
A:-Less than 60 PPM
B:-120 to 180 PPM
C:-More than 180 PPM
D:-60 to 120 PPM
Correct Answer:- Option-B
Question #42:-The difference between the cooling tower water inlet and outlet temperature is known as
A:-Approach
B:-Blow down
C:-Range
D:-Efficiency
Correct Answer:- Option-C
Question #43:-Thermostatic expansion valves are generally set for a super heat of around
A:-10 to 15ºC
B:-0 to 3ºC
C:-4.4 to 5.5ºC
D:-16 to 20ºC
Correct Answer:- Option-C
Question #44:-In which type of expansion valve has high efficiency ?
A:-Capillary Tube
B:-Automatic expansion valve
C:-Hand expansion valve
D:-Thermostatic expansion valve
Correct Answer:- Option-D
Question #45:-The location of an expansion valve in a system is
A:-Between condenser and drier
B:-Between compressor and condenser
C:-Between evaporator and accumulator
D:-Between liquid receiver and evaporator
Correct Answer:- Option-D
Question #46:-The evaporator is also known as
A:-Chilling coil
B:-Freezing coil
C:-Cooling coil
D:-All of the above
Correct Answer:- Option-D
Question #47:-The evaporator which is used in high capacity refrigeration systems is
A:-Dry expansion evaporator
B:-Plate surface evaporator
C:-Flooded evaporator
D:-Bare tube evaporator
Correct Answer:- Option-C
Question #48:-Which process is done first in split AC for shifting from one place to another ?
A:-Flushing
B:-Evacuation
C:-Pump down
D:-Vacuumisation
Correct Answer:- Option-C
Question #49:-A compressor coupled to a motor externally is called
A:-Sealed compressor
B:-Semi sealed compressor
C:-Open type compressor
D:-None of the above
Correct Answer:- Option-C
Question #50:-Which extinguishes the fire of flammable liquids ?
A:-Water
B:-Air
C:-𝐶𝑂2
D:-Oil
Correct Answer:- Option-C

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