Junior Instructor MRAC - 594-2017

Junior Instructor MRAC – 594-2017

Category Code: 594/2017

Medium of Question: English

Date of Test 19-07-2018

Department Industrial Training

Alphacode A

Question 1 : Who among the following is described as “First Generation Feminist” ?

1. Arya Pallam

2. Akkamma Cheriyan

3. Anna Chandi

4. Parvathy Nenmenimangalam

Click here for answer

3. Anna Chandi

Question 2 : Which film got the ‘Best Film Award in the `89^(th)` Oscar Award Ceremony in 2017 ?

1. Fences

2. Moonlight

3. La La Land

4. Lion

Click here for answer

2. Moonlight

Question 3 : Who was called the Lincoln of Kerala ?

1. Ayyankali

2. Pandit K. P. Karuppan

3. Sree Narayana Guru

4. Sahodaran Ayyappan

Click here for answer

2. Pandit K. P. Karuppan

Question 4 : Who wrote the autobiography ‘Aathmakadhakkoru Amukham’ ?

1. Lalithambika Antarjanam

2. A. V. Kuttimalu Amma

3. Lalitha Prabhu

4. K. Devayani

Click here for answer

1. Lalithambika Antarjanam

Question 5 : Which part of the Indian Constitution contains the Fundamental Rights ?

1. Preamble

2. Part II

3. Part III

4. Part IV

Click here for answer

3. Part III

Question 6 : Name the first private bank in Kerala

1. The Imperial Bank

2. The Chartered Bank

3. The Indian National Bank

4. Nedungudi Bank

Click here for answer

4. Nedungudi Bank

Question 7 : Where was the Paliyam road situated ?

1. Chendamangalam

2. Vaikom

3. Guruvayur

4. Udayamperur

Click here for answer

1. Chendamangalam

Question 8 : From which place in Kerala the first newspaper Rajyasamacharam was published ?

1. Chirakkal

2. Vadakara

3. Ottapalam

4. Tellichery

Click here for answer

4. Tellichery

Question 9 : Who founded Samatva Samajam ?

1. Vaikunda Swami

2. Chattampi Swamikal

3. Nitya Chaitanya Yati

4. Nataraja Guru

Click here for answer

1. Vaikunda Swami

Question 10 : In which year the National Food Security Act was passed in India ?

1. 2000

2. 2007

3. 2013

4. 2017

Click here for answer

3. 2013

Question 11 : Who was the Editor of the magazine ‘Rasikaranjini’ ?

1. Kerala Varma Valiyakoyi Thampuran

2. Ramakrishna Pillai

3. Kodungallur Kunhikuttan Thampuran

4. None of the above

Click here for answer

3. Kodungallur Kunhikuttan Thampuran

Question 12 : Who was the translator of the conversation between Rabindranath Tagore and Sree Narayana Guru when they met at Sivagiri in 1922 ?

1. Dr. Palpu

2. R. Sankar

3. T. K. Madhavan

4. Kumaranasan

Click here for answer

4. Kumaranasan

Question 13 : From which country Indian Constitution borrowed Federal System ?

1. Russia

2. Britain

3. Germany

4. Canada

Click here for answer

4. Canada

Question 14 : Name the magazine founded by M. C. Joseph

1. Kalakaumudi

2. Keraleeyam

3. Yukthivadi

4. Prabodhanam

Click here for answer

3. Yukthivadi

Question 15 : In which year the Hindus in Cochin got permission to temple entry ?

1. 1936

2. 1948

3. 1950

4. 1956

Click here for answer

2. 1948

Question 16 : Name the movement founded by Vandana Siva

1. Navadanya Movement

2. Narmada Bachao Andolan

3. Chipko Movement

4. Plachimada Struggle

Click here for answer

1. Navadanya Movement

Question 17 : Who initiated the Kerala Granhasala Sangham ?

1. K. N. Panicker

2. P. N. Panicker

3. Ulloor S. Parameswara Iyer

4. Vallathol Narayana Menon

Click here for answer

2. P. N. Panicker

Question 18 : Which day is observed as World Teacher’s Day ?

1. None of the above

2. October 5

3. November 5

4. December 5

Click here for answer

1. None of the above

Question 19 : Name the place where the play Atukalayilninnu Arangatheku was staged for the first time

1. Angadippuram

2. Pallimukku

3. Thirunavaya

4. Edakunni

Click here for answer

4. Edakunni

Question 20 : Name the Travancore Diwan who gave permission to wear blouse to all those women who embraced Christianity

1. Colonel Munro

2. M. E. Watts

3. Thomas Austin

4. None of the above

Click here for answer

1. Colonel Munro

Question 21 : Which colour wire is recommended for earthing as per IS code ?

1. Red

2. Blue

3. Black

4. Green

Click here for answer

4. Green

Question 22 : A Watt meter is used to measure _______________

1. Only A.C. current

2. Only D.C. current

3. A.C. or D.C. power

4. A.C. voltage

Click here for answer

3. A.C. or D.C. power

Question 23 : Suitable motor for the compressor of a split Air Conditioner is ______________

1. RSIR

2. CSIR

3. PSC or CSR

4. None of these

Click here for answer

3. PSC or CSR

Question 24 : The relay used in H.C. Refrigerant is ___________

1. LMS type

2. Voltage type

3. PTC type

4. Current type

Click here for answer

4. Current type

Question 25 : What is the reason for overheating of the compressor of a Refrigerator ?

1. High working voltage

2. Poor condensation

3. Excess refrigerant in the system

4. All of these

Click here for answer

4. All of these

Question 26 : The Latent Heat Value of `NH_(3)` Refrigerant is __________

1. 650 BTU/lb

2. 560 BTU/lb

3. 565 BTU/lb

4. 465 BTU/lb

Click here for answer

3. 565 BTU/lb

Question 27 : De-foresting timer is used for _________ in frost free refrigerator.

1. Disconnecting the heater

2. Connecting the heater

3. Connecting and disconnecting the compressor

4. Operating compressor and heater

Click here for answer

4. Operating compressor and heater

Question 28 : The eco-friendly refrigerant is _____________

1. Freon-12

2. Freon-22

3. Hydro carbon

4. None of these

Click here for answer

3. Hydro carbon

Question 29 : Drier Strainer is used in Refrigeration System for

1. Removing dust from air flow

2. Removing moisture and air from refrigerant

3. Removing non-condensable gas from air

4. Removing dust particles and moisture from refrigerant

Click here for answer

4. Removing dust particles and moisture from refrigerant

Question 30 : Before compression, the condition of the Refrigerant is __________

1. Low Pressure and Temperature Liquid

2. High Pressure and Temperature Vapour

3. Low Pressure and Low Temperature Gas

4. High Pressure and Temperature Gas

Click here for answer

3. Low Pressure and Low Temperature Gas

Question 31 : Use of Heat exchanger is _______________

1. Super heats the liquid line

2. Sub-cool the section line

3. Heat exchanges suction line to discharge line

4. Heat exchanges liquid line to suction line

Click here for answer

4. Heat exchanges liquid line to suction line

Question 32 : Suction pressure of ice plant with `NH_(3)` Refrigerant is ___________

1. 65 to 75 psig

2. 80 to 90 psig

3. Below 30 psig

4. Above 100 psig

Click here for answer

3. Below 30 psig

Question 33 : In summer season the Air Conditioner trips though OLP. What is the reason ?

1. Condenser may air block and ambient temperature is low

2. Ambient temperature is low

3. Condenser air block and high ambient temperature

4. Over speed of condenser fan

Click here for answer

3. Condenser air block and high ambient temperature

Question 34 : Frost Free Refrigerator defrosting method is _________________

1. Hot gas defrosting

2. Manual defrosting

3. Water spray defrosting

4. Electric heater defrosting

Click here for answer

4. Electric heater defrosting

Question 35 : Water cooled condenser is used in ____________

1. Split air conditioner

2. Window air conditioner

3. Water cooler

4. Central air conditioning plant

Click here for answer

4. Central air conditioning plant

Question 36 : Secondary refrigerant is used in ______________

1. Milk Chilling Plant

2. Chilling Plant

3. Ice Plant

4. All of these

Click here for answer

4. All of these

Question 37 : The R.H. of air required for human comfort is ___________

1. 25%

2. 75%

3. 50%

4. None of these

Click here for answer

4. None of these

Question 38 : On Psychrometric Chart wet bulb temperature lines are __________

1. Horizontal

2. Vertical

3. Straight inclined sloping downward to the right

4. Curved

Click here for answer

3. Straight inclined sloping downward to the right

Question 39 : Tachometer is used to measure ____________

1. Humidity in air

2. Velocity of air

3. Density of air

4. Speed of compressor

Click here for answer

4. Speed of compressor

Question 40 : −252°F is equal to ________________ degree celsius.

1. −160.7

2. −167.7

3. −150.77

4. −157.77

Click here for answer

4. −157.77

Question 41 : An air conditioner consumes 5 Amps from 240 Volts and the PF is 0.8 its power is _________

1. 690 Watts

2. 985 Watts

3. 950 Watts

4. 960 Watts

Click here for answer

4. 960 Watts

Question 42 : _______________ Compressor has less EER.

1. Reciprocating Compressor

2. Rotary Compressor

3. Centrifugal Compressor

4. Screw Compressor

Click here for answer

1. Reciprocating Compressor

Question 43 : An oil separator is installed in-between _________

1. Receiver and Expansion Valve

2. Compressor and Condenser

3. Condenser and Receiver

4. Evaporator and Compressor

Click here for answer

2. Compressor and Condenser

Question 44 : Piercing valve is used to _____________

1. Recover the gas

2. Pinch the charging line

3. Release the gas out

4. Recover the oil

Click here for answer

1. Recover the gas

Question 45 : Diameter of Capillary tube used in Refrigerator is _____________

1. 0.055 inch

2. 0.0361 inch

3. 0.065 inch

4. 0.0255 inch

Click here for answer

2. 0.0361 inch

Question 46 : Automatic expansion valve controls the flow of Refrigerant to evaporator according to _______

1. Pressure

2. Temperature

3. Pressure and Temperature

4. None of these

Click here for answer

1. Pressure

Question 47 : Dry ice is used for

1. Cooling water

2. Cooling milk

3. Preserving food stuffs

4. None of these

Click here for answer

3. Preserving food stuffs

Question 48 : Substitute of Freon-12 refrigerant is __________

1. 134 a

2. Freon-22

3. Freon-11

4. None of these

Click here for answer

1. 134 a

Question 49 : Secondary Refrigerant is useful because _________

1. It is cheap

2. Easily available

3. It reduces the primary Refrigerant Piping

4. None of these

Click here for answer

3. It reduces the primary Refrigerant Piping

Question 50 : In Split air conditioners the following condenser is used ___________

1. Forced convection air cooled

2. Natural Convection air cooled

3. Water cooled

4. Evaporative type

Click here for answer

1. Forced convection air cooled

Question 51 : When is the Vacuum Pump used in refrigeration system ?

1. After gas charging

2. Before gas charging

3. Before leak arresting

4. Before oil charging

Click here for answer

2. Before gas charging

Question 52 : For easy bending and Flaring we use __________

1. Annealed copper tube

2. Plastic tube

3. Brass tube

4. M. S. tube

Click here for answer

1. Annealed copper tube

Question 53 : The Refrigerant for a Refrigerator should have ____________

1. High sensible heat

2. Low latent heat

3. High latent heat

4. Low sensible heat

Click here for answer

3. High latent heat

Question 54 : Most of the domestic Refrigerators work on the following Refrigeration system

1. Vapour Compression System

2. Vapour Absorption System

3. Thermo Electric System

4. Air Compression System

Click here for answer

1. Vapour Compression System

Question 55 : The dry bulb temperature and wet bulb temperature becomes equal at ___________ % RH.

1. 100%

2. 90%

3. 50%

4. None of these

Click here for answer

1. 100%

Question 56 : The chemical formula of R. 22 refrigerant is __________

1. `C Cl_(2)F_(2)`

2. `CHClF_(2)`

3. `C CLF_(2)`

4. `CHCl_(2)F_(2)`

Click here for answer

2. `CHClF_(2)`

Question 57 : Halide torch is used for ______________ Refrigerants.

1. Detect Leak of `NH_(3)`

2. Detect leak of `CO_(2)`

3. Detect leak of Freon group

4. None of these

Click here for answer

3. Detect leak of Freon group

Question 58 : Temperature control device used in Air Conditioner is known as __________

1. Thermostatic Expansion Valve

2. Thermostatic switch

3. A.E.V.

4. H.P.C.

Click here for answer

2. Thermostatic switch

Question 59 : Volumetric efficiency of a compressor is expressed in _____________

1. Percentage

2. Calorie/Hr.

3. BTU/Hr.

4. Psig

Click here for answer

1. Percentage

Question 60 : Inverter Refrigerator is working under the principle of

1. Frequency modulating

2. Voltage modulating

3. Current modulating

4. None of these

Click here for answer

1. Frequency modulating

Question 61 : Inverter Air Conditioner consumes ___________ current.

1. More

2. Less

3. Very high

4. None of these

Click here for answer

2. Less

Question 62 : The term called triple point is _____________

1. The temperature condition of a substance at solid state

2. The pressure condition of a substance at liquid state

3. The pressure/temperature condition is in balance at vapour state

4. The Pressure/Temperature condition in which a substance is in balance in solid, liquid and vapour state

Click here for answer

4. The Pressure/Temperature condition in which a substance is in balance in solid, liquid and vapour state

Question 63 : Bi-metal thermostatis a device used in _____________

1. Pressure circuit

2. TEV circuit

3. Defrosting circuit

4. Compressor circuit

Click here for answer

3. Defrosting circuit

Question 64 : Many bubbles in the liquid line sight glass are a sign that the system is

1. Properly charged

2. Contaminated with air

3. Under charged

4. Over charged

Click here for answer

3. Under charged

Question 65 : The main parts of a Rotary Compressor are _____________

1. Cylinder and piston

2. Rotor and crank shaft

3. Roller and cylinder

4. All of the above

Click here for answer

3. Roller and cylinder

Question 66 : High side float valve is used in ____________

1. Dry type evaporator

2. Non-frosting evaporator

3. Flooded type evaporator

4. All of the above

Click here for answer

3. Flooded type evaporator

Question 67 : Modification of R-12 to R-134a refrigerant in a refrigeration system is called ___________

1. Recovery

2. Retrofit

3. Refilling

4. Pump down

Click here for answer

2. Retrofit

Question 68 : Car Air Conditioner is a ____________ system.

1. Vapour absorption

2. Vapour Compression

3. Air Compression

4. None of these

Click here for answer

2. Vapour Compression

Question 69 : Magnetic Clutch is used in _____________

1. Split A/C

2. Window A/C

3. Car A/C

4. Package A/C

Click here for answer

3. Car A/C

Question 70 : Chilling plant is called as ____________

1. Direct A/C Plant

2. Indirect A/C Plant

3. Multi split A/C

4. None of these

Click here for answer

2. Indirect A/C Plant

Question 71 : Chilled milk temperature in a milk chilling plant is ____________

1. −5°C to 0°C

2. 10°C to 12°C

3. 2°C to 10°C

4. None of these

Click here for answer

3. 2°C to 10°C

Question 72 : Sling Psychrometer is used to measure ____________

1. Relative humidity

2. Dry bulb and wet bulb temperature

3. Cooling and heating of air supply

4. None of these

Click here for answer

2. Dry bulb and wet bulb temperature

Question 73 : Voltage type relay is used in _______________ compressor motor.

1. CSIR

2. CSR

3. RSIR

4. PSC

Click here for answer

2. CSR

Question 74 : For condenser flushing __________ is used.

1. CTC

2. Trichloro ethylene

3. Petrol

4. All of these

Click here for answer

2. Trichloro ethylene

Question 75 : Mechanical Refrigeration system is also called as _____________

1. Vapour absorption system

2. Vapour compression system

3. Liquid vapour system

4. All of these

Click here for answer

2. Vapour compression system

Question 76 : Voltage type relay coil is connected to motor starting terminal is in ______________

1. Series

2. Parallel

3. Series and parallel

4. Series at starting time then parallel

Click here for answer

2. Parallel

Question 77 : Thestarting capacitor value of a 1 Ton Split A/C is __________

1. 40 to 60 mfd

2. 80 to 100 mfd

3. 100 to 120 mfd

4. None of these

Click here for answer

2. 80 to 100 mfd

Question 78 : _____________ method is used to detect leaksin Refrigeration system.

1. Observation

2. Soap Bubble

3. Water tank dipping

4. All of these

Click here for answer

4. All of these

Question 79 : Finand tube type evaporator is used in ____________

1. Window AC

2. Package AC

3. Split AC

4. All of these

Click here for answer

4. All of these

Question 80 : Direct Cool Refrigerator is also called as ____________

1. Conventional type Refrigerator

2. Frost free Refrigerator

3. Non-frost Refrigerator

4. None of these

Click here for answer

1. Conventional type Refrigerator

Question 81 : The safest chemical to use for descaling is _________

1. Sulphuric acid

2. Diluted HCl

3. Diluted Nitric acid

4. Bleaching powder

Click here for answer

2. Diluted HCl

Question 82 : The purpose of air filter in air conditioning system is ___________

1. To remove dust and dirt from air

2. To remove dust from refrigerant

3. To remove humidity from air

4. To remove air from A/C space

Click here for answer

1. To remove dust and dirt from air

Question 83 : In hot gas by pass method of capacity control of compressor, the hot compressed gas is _________

1. By passed back to liquid line

2. By passed back to suction line

3. By passed back to evaporator line

4. By passed back to liquid receiver

Click here for answer

2. By passed back to suction line

Question 84 : The capacity of refrigerator is expressed in ____________

1. Litre

2. Tons of Refrigeration

3. k Cal/TR

4. None of these

Click here for answer

1. Litre

Question 85 : Tap used to avoid water wastage is __________

1. Push tap

2. Ball tap

3. Lever type tap

4. Regulating tap

Click here for answer

1. Push tap

Question 86 : Floor level of water cooler to be checked by _________

1. Measuring scale

2. Viewing perpendicularly

3. Using spirit level

4. Using tube level

Click here for answer

3. Using spirit level

Question 87 : Dead nut is used in Refrigeration flare fittings ____________

1. For closing a connection end

2. For controlling a line

3. For operating on and off

4. None of these

Click here for answer

1. For closing a connection end

Question 88 : The bush bearing of a compressor is lubricated by _____________

1. Oil

2. Grease

3. Refrigerant

4. Air and water

Click here for answer

1. Oil

Question 89 : Cylinder colour code of R134 a is _________

1. Orange

2. Green

3. White

4. Orchid

Click here for answer

3. White

Question 90 : What is the use of Crank case oil heater ?

1. Heats up the oil when compressor is idle

2. Heats up the oil when compressor is ON

3. Heats up the Refrigerant in crank case

4. None of these

Click here for answer

1. Heats up the oil when compressor is idle

Question 91 : Pressure relief valve is installed on ___________

1. Compressor head

2. Liquid receiver

3. Discharge line of compressor

4. All of these

Click here for answer

4. All of these

Question 92 : H.C. blend contains ______________

1. 40% isobutene and 60% propane

2. 50% isobutane and 50% propane

3. 50% hydrogen and 50% carbon

4. 50% fluorine and 50% oxygen

Click here for answer

2. 50% isobutane and 50% propane

Question 93 : Fan motor of split Air conditioner of 1 Ton capacity is __________

1. PSC

2. RSIR

3. CSR

4. Shade pole

Click here for answer

1. PSC

Question 94 : Spray nozzles of cooling tower is used for __________

1. Sprays the water from evaporator

2. Sprinkle the water from condenser

3. Sprays the water from chiller

4. All of these

Click here for answer

2. Sprinkle the water from condenser

Question 95 : Evaporative condenser is used in _____________

1. Ice plant

2. Split air conditioner

3. Package air conditioner

4. Window air conditioner

Click here for answer

1. Ice plant

Question 96 : Thermometer is to measure the __________

1. Latent heat

2. Sensible heat

3. Thermo heat

4. Specific heat

Click here for answer

2. Sensible heat

Question 97 : Duct is used to __________

1. Distribute air from AHU to confined space

2. AHU to out side of A/C room

3. Return air from confined space to AHU

4. All of these

Click here for answer

4. All of these

Question 98 : Pully Puller is used to remove __________

1. Fly wheel and bearings from shaft

2. Shaft from compressor

3. Piston from cylinderpully

4. Rings from piston

Click here for answer

1. Fly wheel and bearings from shaft

Question 99 : Three phase motor is used in _____________

1. Package A/C

2. Multy split A/C

3. Central A/C Plant

4. All of these

Click here for answer

4. All of these

Question 100 : Service valve is used for ______________

1. Charging gas to system

2. Pressure testing

3. Evacuating

4. All of these

Click here for answer

4. All of these

FINAL ANSWER KEY

Question Paper Code: 37/2018/OL

Category Code: 594/2017

Junior Instructor MRAC – 594-2017

Medium of Question: English

Date of Test 19-07-2018

Department Industrial Training

Alphacode A