Junior Instructor MRAC – INDUSTRIAL TRAINING

PROVISIONAL ANSWER KEY
Question Paper Code: 37/2018/OL
Category Code: 594/2017
Exam: Junior Instructor MRAC
Medium of Question: English
Date of Test 19-07-2018
Department Industrial Training
Alphacode A
Question1:-Who among the following is described as “First Generation Feminist” ?
A:-Arya Pallam
B:-Akkamma Cheriyan
C:-Anna Chandi
D:-Parvathy Nenmenimangalam
Correct Answer:- Option-C
Question2:-Which film got the ‘Best Film Award in the `89^(th)` Oscar Award Ceremony in 2017 ?
A:-Fences
B:-Moonlight
C:-La La Land
D:-Lion
Correct Answer:- Option-B
Question3:-Who was called the Lincoln of Kerala ?
A:-Ayyankali
B:-Pandit K. P. Karuppan
C:-Sree Narayana Guru
D:-Sahodaran Ayyappan
Correct Answer:- Option-B
Question4:-Who wrote the autobiography ‘Aathmakadhakkoru Amukham’ ?
A:-Lalithambika Antarjanam
B:-A. V. Kuttimalu Amma
C:-Lalitha Prabhu
D:-K. Devayani
Correct Answer:- Option-A
Question5:-Which part of the Indian Constitution contains the Fundamental Rights ?
A:-Preamble
B:-Part II
C:-Part III
D:-Part IV
Correct Answer:- Option-C
Question6:-Name the first private bank in Kerala
A:-The Imperial Bank
B:-The Chartered Bank
C:-The Indian National Bank
D:-Nedungudi Bank
Correct Answer:- Option-D
Question7:-Where was the Paliyam road situated ?
A:-Chendamangalam
B:-Vaikom
C:-Guruvayur
D:-Udayamperur
Correct Answer:- Option-A
Question8:-From which place in Kerala the first newspaper Rajyasamacharam was published ?
A:-Chirakkal
B:-Vadakara
C:-Ottapalam
D:-Tellichery
Correct Answer:- Option-D
Question9:-Who founded Samatva Samajam ?
A:-Vaikunda Swami
B:-Chattampi Swamikal
C:-Nitya Chaitanya Yati
D:-Nataraja Guru
Correct Answer:- Option-A
Question10:-In which year the National Food Security Act was passed in India ?
A:-2000
B:-2007
C:-2013
D:-2017
Correct Answer:- Option-C
Question11:-Who was the Editor of the magazine ‘Rasikaranjini’ ?
A:-Kerala Varma Valiyakoyi Thampuran
B:-Ramakrishna Pillai
C:-Kodungallur Kunhikuttan Thampuran
D:-None of the above
Correct Answer:- Option-C
Question12:-Who was the translator of the conversation between Rabindranath Tagore and Sree Narayana Guru when they
met at Sivagiri in 1922 ?
A:-Dr. Palpu
B:-R. Sankar
C:-T. K. Madhavan
D:-Kumaranasan
Correct Answer:- Option-D
Question13:-From which country Indian Constitution borrowed Federal System ?
A:-Russia
B:-Britain
C:-Germany
D:-Canada
Correct Answer:- Option-D
Question14:-Name the magazine founded by M. C. Joseph
A:-Kalakaumudi
B:-Keraleeyam
C:-Yukthivadi
D:-Prabodhanam
Correct Answer:- Option-C
Question15:-In which year the Hindus in Cochin got permission to temple entry ?
A:-1936
B:-1948
C:-1950
D:-1956
Correct Answer:- Option-B
Question16:-Name the movement founded by Vandana Siva
A:-Navadanya Movement
B:-Narmada Bachao Andolan
C:-Chipko Movement
D:-Plachimada Struggle
Correct Answer:- Option-A
Question17:-Who initiated the Kerala Granhasala Sangham ?
A:-K. N. Panicker
B:-P. N. Panicker
C:-Ulloor S. Parameswara Iyer
D:-Vallathol Narayana Menon
Correct Answer:- Option-B
Question18:-Which day is observed as World Teacher’s Day ?
A:-None of the above
B:-October 5
C:-November 5
D:-December 5
Correct Answer:- Option-A
Question19:-Name the place where the play Atukalayilninnu Arangatheku was staged for the first time
A:-Angadippuram
B:-Pallimukku
C:-Thirunavaya
D:-Edakunni
Correct Answer:- Option-D
Question20:-Name the Travancore Diwan who gave permission to wear blouse to all those women who embraced
Christianity
A:-Colonel Munro
B:-M. E. Watts
C:-Thomas Austin
D:-None of the above
Correct Answer:- Option-A
Question21:-Which colour wire is recommended for earthing as per IS code ?
A:-Red
B:-Blue
C:-Black
D:-Green
Correct Answer:- Option-D
Question22:-A Watt meter is used to measure _______________
A:-Only A.C. current
B:-Only D.C. current
C:-A.C. or D.C. power
D:-A.C. voltage
Correct Answer:- Option-C
Question23:-Suitable motor for the compressor of a split Air Conditioner is ______________
A:-RSIR
B:-CSIR
C:-PSC or CSR
D:-None of these
Correct Answer:- Option-C
Question24:-The relay used in H.C. Refrigerant is ___________
A:-LMS type
B:-Voltage type
C:-PTC type
D:-Current type
Correct Answer:- Option-D
Question25:-What is the reason for overheating of the compressor of a Refrigerator ?
A:-High working voltage
B:-Poor condensation
C:-Excess refrigerant in the system
D:-All of these
Correct Answer:- Option-D
Question26:-The Latent Heat Value of `NH_(3)` Refrigerant is __________
A:-650 BTU/lb
B:-560 BTU/lb
C:-565 BTU/lb
D:-465 BTU/lb
Correct Answer:- Option-C
Question27:-De-foresting timer is used for _________ in frost free refrigerator.
A:-Disconnecting the heater
B:-Connecting the heater
C:-Connecting and disconnecting the compressor
D:-Operating compressor and heater
Correct Answer:- Option-D
Question28:-The eco-friendly refrigerant is _____________
A:-Freon-12
B:-Freon-22
C:-Hydro carbon
D:-None of these
Correct Answer:- Option-C
Question29:-Drier Strainer is used in Refrigeration System for
A:-Removing dust from air flow
B:-Removing moisture and air from refrigerant
C:-Removing non-condensable gas from air
D:-Removing dust particles and moisture from refrigerant
Correct Answer:- Option-D
Question30:-Before compression, the condition of the Refrigerant is __________
A:-Low Pressure and Temperature Liquid
B:-High Pressure and Temperature Vapour
C:-Low Pressure and Low Temperature Gas
D:-High Pressure and Temperature Gas
Correct Answer:- Option-C
Question31:-Use of Heat exchanger is _______________
A:-Super heats the liquid line
B:-Sub-cool the section line
C:-Heat exchanges suction line to discharge line
D:-Heat exchanges liquid line to suction line
Correct Answer:- Option-D
Question32:-Suction pressure of ice plant with `NH_(3)` Refrigerant is ___________
A:-65 to 75 psig
B:-80 to 90 psig
C:-Below 30 psig
D:-Above 100 psig
Correct Answer:- Option-C
Question33:-In summer season the Air Conditioner trips though OLP. What is the reason ?
A:-Condenser may air block and ambient temperature is low
B:-Ambient temperature is low
C:-Condenser air block and high ambient temperature
D:-Over speed of condenser fan
Correct Answer:- Option-C
Question34:-Frost Free Refrigerator defrosting method is _________________
A:-Hot gas defrosting
B:-Manual defrosting
C:-Water spray defrosting
D:-Electric heater defrosting
Correct Answer:- Option-D
Question35:-Water cooled condenser is used in ____________
A:-Split air conditioner
B:-Window air conditioner
C:-Water cooler
D:-Central air conditioning plant
Correct Answer:- Option-D
Question36:-Secondary refrigerant is used in ______________
A:-Milk Chilling Plant
B:-Chilling Plant
C:-Ice Plant
D:-All of these
Correct Answer:- Option-D
Question37:-The R.H. of air required for human comfort is ___________
A:-25%
B:-75%
C:-50%
D:-None of these
Correct Answer:- Option-D
Question38:-On Psychrometric Chart wet bulb temperature lines are __________
A:-Horizontal
B:-Vertical
C:-Straight inclined sloping downward to the right
D:-Curved
Correct Answer:- Option-C
Question39:-Tachometer is used to measure ____________
A:-Humidity in air
B:-Velocity of air
C:-Density of air
D:-Speed of compressor
Correct Answer:- Option-D
Question40:-−252°F is equal to ________________ degree celsius.
A:-−160.7
B:-−167.7
C:-−150.77
D:-−157.77
Correct Answer:- Option-D
Question41:-An air conditioner consumes 5 Amps from 240 Volts and the PF is 0.8 its power is _________
A:-690 Watts
B:-985 Watts
C:-950 Watts
D:-960 Watts
Correct Answer:- Option-D
Question42:-_______________ Compressor has less EER.
A:-Reciprocating Compressor
B:-Rotary Compressor
C:-Centrifugal Compressor
D:-Screw Compressor
Correct Answer:- Option-A
Question43:-An oil separator is installed in-between _________
A:-Receiver and Expansion Valve
B:-Compressor and Condenser
C:-Condenser and Receiver
D:-Evaporator and Compressor
Correct Answer:- Option-B
Question44:-Piercing valve is used to _____________
A:-Recover the gas
B:-Pinch the charging line
C:-Release the gas out
D:-Recover the oil
Correct Answer:- Option-A
Question45:-Diameter of Capillary tube used in Refrigerator is _____________
A:-0.055 inch
B:-0.0361 inch
C:-0.065 inch
D:-0.0255 inch
Correct Answer:- Option-B
Question46:-Automatic expansion valve controls the flow of Refrigerant to evaporator according to _______
A:-Pressure
B:-Temperature
C:-Pressure and Temperature
D:-None of these
Correct Answer:- Option-A
Question47:-Dry ice is used for
A:-Cooling water
B:-Cooling milk
C:-Preserving food stuffs
D:-None of these
Correct Answer:- Option-C
Question48:-Substitute of Freon-12 refrigerant is __________
A:-134 a
B:-Freon-22
C:-Freon-11
D:-None of these
Correct Answer:- Option-A
Question49:-Secondary Refrigerant is useful because _________
A:-It is cheap
B:-Easily available
C:-It reduces the primary Refrigerant Piping
D:-None of these
Correct Answer:- Option-C
Question50:-In Split air conditioners the following condenser is used ___________
A:-Forced convection air cooled
B:-Natural Convection air cooled
C:-Water cooled
D:-Evaporative type
Correct Answer:- Option-A
Question51:-When is the Vacuum Pump used in refrigeration system ?
A:-After gas charging
B:-Before gas charging
C:-Before leak arresting
D:-Before oil charging
Correct Answer:- Option-B
Question52:-For easy bending and Flaring we use __________
A:-Annealed copper tube
B:-Plastic tube
C:-Brass tube
D:-M. S. tube
Correct Answer:- Option-A
Question53:-The Refrigerant for a Refrigerator should have ____________
A:-High sensible heat
B:-Low latent heat
C:-High latent heat
D:-Low sensible heat
Correct Answer:- Option-C
Question54:-Most of the domestic Refrigerators work on the following Refrigeration system
A:-Vapour Compression System
B:-Vapour Absorption System
C:-Thermo Electric System
D:-Air Compression System
Correct Answer:- Option-A
Question55:-The dry bulb temperature and wet bulb temperature becomes equal at ___________ % RH.
A:-100%
B:-90%
C:-50%
D:-None of these
Correct Answer:- Option-A
Question56:-The chemical formula of R. 22 refrigerant is __________
A:-`C Cl_(2)F_(2)`
B:-`CHClF_(2)`
C:-`C CLF_(2)`
D:-`CHCl_(2)F_(2)`
Correct Answer:- Option-B
Question57:-Halide torch is used for ______________ Refrigerants.
A:-Detect Leak of `NH_(3)`
B:-Detect leak of `CO_(2)`
C:-Detect leak of Freon group
D:-None of these
Correct Answer:- Option-C
Question58:-Temperature control device used in Air Conditioner is known as __________
A:-Thermostatic Expansion Valve
B:-Thermostatic switch
C:-A.E.V.
D:-H.P.C.
Correct Answer:- Option-B
Question59:-Volumetric efficiency of a compressor is expressed in _____________
A:-Percentage
B:-Calorie/Hr.
C:-BTU/Hr.
D:-Psig
Correct Answer:- Option-A
Question60:-Inverter Refrigerator is working under the principle of
A:-Frequency modulating
B:-Voltage modulating
C:-Current modulating
D:-None of these
Correct Answer:- Option-A
Question61:-Inverter Air Conditioner consumes ___________ current.
A:-More
B:-Less
C:-Very high
D:-None of these
Correct Answer:- Option-B
Question62:-The term called triple point is _____________
A:-The temperature condition of a substance at solid state
B:-The pressure condition of a substance at liquid state
C:-The pressure/temperature condition is in balance at vapour state
D:-The Pressure/Temperature condition in which a substance is in balance in solid, liquid and vapour state
Correct Answer:- Option-D
Question63:-Bi-metal thermostatis a device used in _____________
A:-Pressure circuit
B:-TEV circuit
C:-Defrosting circuit
D:-Compressor circuit
Correct Answer:- Option-C
Question64:-Many bubbles in the liquid line sight glass are a sign that the system is
A:-Properly charged
B:-Contaminated with air
C:-Under charged
D:-Over charged
Correct Answer:- Option-C
Question65:-The main parts of a Rotary Compressor are _____________
A:-Cylinder and piston
B:-Rotor and crank shaft
C:-Roller and cylinder
D:-All of the above
Correct Answer:- Option-C
Question66:-High side float valve is used in ____________
A:-Dry type evaporator
B:-Non-frosting evaporator
C:-Flooded type evaporator
D:-All of the above
Correct Answer:- Option-C
Question67:-Modification of R-12 to R-134a refrigerant in a refrigeration system is called ___________
A:-Recovery
B:-Retrofit
C:-Refilling
D:-Pump down
Correct Answer:- Option-B
Question68:-Car Air Conditioner is a ____________ system.
A:-Vapour absorption
B:-Vapour Compression
C:-Air Compression
D:-None of these
Correct Answer:- Option-B
Question69:-Magnetic Clutch is used in _____________
A:-Split A/C
B:-Window A/C
C:-Car A/C
D:-Package A/C
Correct Answer:- Option-C
Question70:-Chilling plant is called as ____________
A:-Direct A/C Plant
B:-Indirect A/C Plant
C:-Multi split A/C
D:-None of these
Correct Answer:- Option-B
Question71:-Chilled milk temperature in a milk chilling plant is ____________
A:-−5°C to 0°C
B:-10°C to 12°C
C:-2°C to 10°C
D:-None of these
Correct Answer:- Option-C
Question72:-Sling Psychrometer is used to measure ____________
A:-Relative humidity
B:-Dry bulb and wet bulb temperature
C:-Cooling and heating of air supply
D:-None of these
Correct Answer:- Option-B
Question73:-Voltage type relay is used in _______________ compressor motor.
A:-CSIR
B:-CSR
C:-RSIR
D:-PSC
Correct Answer:- Option-B
Question74:-For condenser flushing __________ is used.
A:-CTC
B:-Trichloro ethylene
C:-Petrol
D:-All of these
Correct Answer:- Option-B
Question75:-Mechanical Refrigeration system is also called as _____________
A:-Vapour absorption system
B:-Vapour compression system
C:-Liquid vapour system
D:-All of these
Correct Answer:- Option-B
Question76:-Voltage type relay coil is connected to motor starting terminal is in ______________
A:-Series
B:-Parallel
C:-Series and parallel
D:-Series at starting time then parallel
Correct Answer:- Option-B
Question77:-Thestarting capacitor value of a 1 Ton Split A/C is __________
A:-40 to 60 mfd
B:-80 to 100 mfd
C:-100 to 120 mfd
D:-None of these
Correct Answer:- Option-B
Question78:-_____________ method is used to detect leaksin Refrigeration system.
A:-Observation
B:-Soap Bubble
C:-Water tank dipping
D:-All of these
Correct Answer:- Option-D
Question79:-Finand tube type evaporator is used in ____________
A:-Window AC
B:-Package AC
C:-Split AC
D:-All of these
Correct Answer:- Option-D
Question80:-Direct Cool Refrigerator is also called as ____________
A:-Conventional type Refrigerator
B:-Frost free Refrigerator
C:-Non-frost Refrigerator
D:-None of these
Correct Answer:- Option-A
Question81:-The safest chemical to use for descaling is _________
A:-Sulphuric acid
B:-Diluted HCl
C:-Diluted Nitric acid
D:-Bleaching powder
Correct Answer:- Option-B
Question82:-The purpose of air filter in air conditioning system is ___________
A:-To remove dust and dirt from air
B:-To remove dust from refrigerant
C:-To remove humidity from air
D:-To remove air from A/C space
Correct Answer:- Option-A
Question83:-In hot gas by pass method of capacity control of compressor, the hot compressed gas is _________
A:-By passed back to liquid line
B:-By passed back to suction line
C:-By passed back to evaporator line
D:-By passed back to liquid receiver
Correct Answer:- Option-B
Question84:-The capacity of refrigerator is expressed in ____________
A:-Litre
B:-Tons of Refrigeration
C:-k Cal/TR
D:-None of these
Correct Answer:- Option-A
Question85:-Tap used to avoid water wastage is __________
A:-Push tap
B:-Ball tap
C:-Lever type tap
D:-Regulating tap
Correct Answer:- Option-A
Question86:-Floor level of water cooler to be checked by _________
A:-Measuring scale
B:-Viewing perpendicularly
C:-Using spirit level
D:-Using tube level
Correct Answer:- Option-C
Question87:-Dead nut is used in Refrigeration flare fittings ____________
A:-For closing a connection end
B:-For controlling a line
C:-For operating on and off
D:-None of these
Correct Answer:- Option-A
Question88:-The bush bearing of a compressor is lubricated by _____________
A:-Oil
B:-Grease
C:-Refrigerant
D:-Air and water
Correct Answer:- Option-A
Question89:-Cylinder colour code of R134 a is _________
A:-Orange
B:-Green
C:-White
D:-Orchid
Correct Answer:- Option-C
Question90:-What is the use of Crank case oil heater ?
A:-Heats up the oil when compressor is idle
B:-Heats up the oil when compressor is ON
C:-Heats up the Refrigerant in crank case
D:-None of these
Correct Answer:- Option-A
Question91:-Pressure relief valve is installed on ___________
A:-Compressor head
B:-Liquid receiver
C:-Discharge line of compressor
D:-All of these
Correct Answer:- Option-D
Question92:-H.C. blend contains ______________
A:-40% isobutene and 60% propane
B:-50% isobutane and 50% propane
C:-50% hydrogen and 50% carbon
D:-50% fluorine and 50% oxygen
Correct Answer:- Option-B
Question93:-Fan motor of split Air conditioner of 1 Ton capacity is __________
A:-PSC
B:-RSIR
C:-CSR
D:-Shade pole
Correct Answer:- Option-A
Question94:-Spray nozzles of cooling tower is used for __________
A:-Sprays the water from evaporator
B:-Sprinkle the water from condenser
C:-Sprays the water from chiller
D:-All of these
Correct Answer:- Option-B
Question95:-Evaporative condenser is used in _____________
A:-Ice plant
B:-Split air conditioner
C:-Package air conditioner
D:-Window air conditioner
Correct Answer:- Option-A
Question96:-Thermometer is to measure the __________
A:-Latent heat
B:-Sensible heat
C:-Thermo heat
D:-Specific heat
Correct Answer:- Option-B
Question97:-Duct is used to __________
A:-Distribute air from AHU to confined space
B:-AHU to out side of A/C room
C:-Return air from confined space to AHU
D:-All of these
Correct Answer:- Option-D
Question98:-Pully Puller is used to remove __________
A:-Fly wheel and bearings from shaft
B:-Shaft from compressor
C:-Piston from cylinderpully
D:-Rings from piston
Correct Answer:- Option-A
Question99:-Three phase motor is used in _____________
A:-Package A/C
B:-Multy split A/C
C:-Central A/C Plant
D:-All of these
Correct Answer:- Option-D
Question100:-Service valve is used for ______________
A:-Charging gas to system
B:-Pressure testing
C:-Evacuating
D:-All of these
Correct Answer:- Option-D