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ITI Previous Papers REFRIGERATION AND AIR CONDITIONING TECHNICIAN(NSQF)

PREVIOUS YEAR PAPER
TRADE NAMEREFRIGERATION AND AIR CONDITIONING TECHNICIAN(NSQF)
TRADE TYPEEngineering
YEAR2020-2022
EXAM DATE2022-08-30
EXAM TIME12:15:14:15
Question Paper MOCK TEST

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TRADE THEORY

What is the part marked as X in SS tank assembly of water cooler?

  1. Float ball
  2. Drain plug
  3. Insulation
  4. Water inlet

What is the type of cooling system?

  1. Central plant AC
  2. VRF
  3. CAV
  4. VAV

Which pressure opposes the spring pressure in AEV?

  1. Meddle
  2. Condenser
  3. Evaporator
  4. Bellow

Which equipment of ice plant is started first?

  1. Condenser water pump
  2. Make up water pump
  3. Agitator motor
  4. Compressor motor

Which colour code indicates the earth wire in power supply cord?

  1. Brown
  2. Green/yellow
  3. Black
  4. Red

What is the name of part marked as X in electronic expansion valve?

  1. Motor
  2. Piston sleeve
  3. Lead screw
  4. Orifice assembly

Which meter is used for measuring quantity of water consumed?

  1. Hydrometer
  2. Anemometer
  3. Flow meter
  4. Barometer

Where the air temperature is measured to check the performance of package AC?

  1. Condenser outlet
  2. Atmosphere
  3. Supply grille
  4. Blower inlet

How the reciprocal of air density is mentioned in psychrometric chart?

  1. Specific heat ratio
  2. Specific gravity
  3. Specific volume per unit mass
  4. Sensible heat ratio

What is the purpose of air filter?

  1. Circulate air
  2. Cool air
  3. Ensure clean air
  4. Improve performance

Which gas is used for treating cooling tower water to destroy bacteria and virus?

  1. CO2
  2. O3
  3. O2
  4. N2

Which testing is in operation on float ball used in low side float control?

  1. Float ball leakage
  2. Brine level
  3. Water level
  4. Float mechanism working

Which tool is used for descaling the condenser tubes in shell and tube condenser?

  1. Teflon fibre brush
  2. Sponge brush
  3. Brass brush
  4. Steel brush

Which expansion device is used in walk in coolers?

  1. Hand expansion
  2. Thermostatic
  3. Capillary
  4. Float

Which tool is used for service valve operations in package AC?

  1. Screw spanner
  2. Ratchet key/wrench
  3. Double end spanner
  4. Cutting pliers

Which salt is used to make brine solution?

  1. Potassium chloride
  2. Iron chloride
  3. Sodium chloride
  4. Zinc chloride

Which electrical load is first operated in a cold storage plant?

  1. Compressor motor
  2. Compressor oil pump
  3. Condenser fan
  4. Blower fan

Which safety device is attached to nitrogen cylinder?

  1. Compound gauge
  2. Fuse plug
  3. Two stage pressure regulator
  4. Automatic pressure bypass valve

What is the name of part marked as X in a fan motor?

  1. Bearings
  2. Rotor
  3. Stator
  4. Oil cup

What is the name of component used in air distribution system?

  1. Duct
  2. Single blade damper
  3. Multi blade damper
  4. Diffuser

What is the name of damper inside the duct?

  1. Butterfly
  2. Single vane
  3. Multiple vane
  4. Splitter

What is the name of part marked as ‘X’ in fan coil unit?

  1. Heater
  2. Drain pan
  3. Fan motor
  4. Coil

What is the part marked as X in an evaporative condenser?

  1. Condenser coil
  2. Water pump
  3. Eliminators
  4. Spray nozzles

What is the human body temperature in oC?

  1. 47oC
  2. 17oC
  3. 37oC
  4. 27oC

Which instrument is used to check the specific gravity of brine solution?

  1. Hygrometer
  2. Tachometer
  3. Anemometer
  4. Hydrometer

What is the temperature range of reach in cooler?

  1. 0oC to -5oC
  2. Below 0oC
  3. 0oC to -10oC
  4. 0oC to 4.4oC

Which thickness of PUF has the least thermal conductivity?

  1. Four inch
  2. Three inch
  3. One inch
  4. Two inch

Which is circulated in VRV system for cooling cycle?

  1. Cooled air
  2. Cooled brine
  3. Liquid refrigerant
  4. Water

Which valve releases the refrigerant if pressure exceeds the safe level in high side of system?

  1. Purge valve
  2. Drain valve
  3. Relief valve
  4. Expansion valve

Which valve is opened first after installing the package AC for ‘test’ run?

  1. Ball valve
  2. Globe valve
  3. Solenoid valve
  4. Service valve

What is the name of part marked X in direct drive coupling of compressor and motor?

  1. Motor shaft key
  2. Crank shaft
  3. Spacers
  4. Motor shaft

What is the name of component?

  1. Suction service valve
  2. Receiver shut of valve
  3. Schrader valve
  4. Discharge service valve

Which branch of science deals with the properties of air?

  1. Geometry
  2. Trigonometry
  3. Psychrometry
  4. Audiometry

Which mechanism make water level in cooling tower basin?

  1. Nozzles
  2. Strainer
  3. Pump
  4. Float valve

What is the condition of refrigerant at the outlet of dry expansion evaporator?

  1. Only vapour
  2. Less vapour
  3. Only liquid
  4. More liquid

Which part is fixed on a rotating shaft of centrifugal compressor?

  1. Screw
  2. Scroll
  3. Impeller
  4. Piston

Which valve is used for gas charging and pressure checking in central AC plants?

  1. Safety valve
  2. Solenoid valve
  3. Service valve
  4. Non return valve

What is the pH valve of pure water?

  1. 9
  2. 6
  3. 7
  4. 8

WORKSHOP CALCULATIONS AND SCIENCE

What are the various stages of heat treatment?

  1. Soaking, Quenching and Cooling
  2. Heating, Cooling and Quenching
  3. Quenching, Cooling and Heating
  4. Heating, Soaking and Quenching

Which one of the following geometrical shape's centre of gravity lies from its base is 1/3 of its height?

  1. Square
  2. Rhombus
  3. Cone
  4. Triangle

What is the centre of gravity of a sphere?

  1. At the diameter
  2. On the circumference
  3. At the centre
  4. At the radius

What is the formula for area of the circle?

What is colour of a metal piece when heated to 250oC while doing the tempering process?

  1. Blue
  2. Pale
  3. Purple
  4. Brown

What is the name of a booklet, the rates of various terms are indicated?

  1. Price catalogue
  2. Price bank
  3. Price tag
  4. Price bunch

ENGINEERING DRAWING

Identify the symbol.

  1. Resistor
  2. Switch (closed)
  3. Switch (open)
  4. Connecting wire

Name the symbol.

  1. Diode
  2. Battery
  3. Switch
  4. Cell

The best shape of ducts in air conditioning is_______

  1. square
  2. rectangular
  3. round
  4. triangular

How many basic units of mechanical refrigeration systems?

  1. 4
  2. 1
  3. 3
  4. 2

Which is not a part of refrigeration cycle?

  1. Compressor
  2. Thermostat
  3. Freezer
  4. Condenser

How much temperature is maintained in the freezer of a refrigerator?

  1. 50oF
  2. 0oF
  3. 20oF
  4. 5oF

EMPLYABILITY SKILLS

Working hard to achieve your goals and not giving up when you face failure is called…..

  1. Self-belief
  2. Self-awareness
  3. Grit
  4. Independent decision making

Official conversations are part of…..

  1. friendship
  2. formal communication
  3. resumes
  4. informal communication

Which one is NOT a career site to find job?

  1. babajob.com
  2. shaadi.com
  3. LinkedIn.com
  4. timesjob.com

Linkedin is a platform for _____

  1. professional platform
  2. govt. jobs
  3. real estate
  4. matrimony

BCC in email means….

  1. Blind Correct Copy
  2. Booked Carbon Copy
  3. Blind Chat Copy
  4. Blind Carbon Copy

Fill in the blank with correct past tense of the verb" I_________a movie yesterday"

  1. watched
  2. watch
  3. am watching
  4. will watch

Neighbourhoods may be ______ based on people, location, strengths and weaknesses.

  1. described
  2. explained
  3. included
  4. separated

Listening of songs to derive pleasure only comes under_____

  1. therapeutic listening
  2. comprehensive listening
  3. critical listening
  4. appreciative listening

 A _____________sentence is a sentence that expresses a direct , command, invitations, warning or instruction.

  1. imperative
  2. adjective
  3. compound
  4. simple

One important rule to network effectively is…….

  1. talk to the same people
  2. keep in touch with your contacts
  3. identify your competitors
  4. focus on selling your product

Prevention of Sexual Harassment for women at work place Act 2013 also known as ……….

  1. POSH
  2. PUSH
  3. POS
  4. PPP

An employee gets feedback from supervisors, HR and other colleagues to…

  1. feel bad
  2. be insulted
  3. improve
  4. feel uncomfortable

Sustaining a river means…..

  1. to build a dam
  2. to pollute the river
  3. to maintain the river in its present condition
  4. to build a bridge

Identify the opposites. clean x ----------------, healthy x ---------------------------

  1. dirty, unhealthy
  2. dirt, unhealthy
  3. . dirty, healthy
  4. dirty, health

If we want to sustain the -----------, we should not _____it.

  1. pollute, sustainable
  2. environment, sustainable
  3. environment, pollute
  4. environment, pollution

Which one is a "Do's" of discussion etiquettes?

  1. Loose your temper
  2. Listen to others
  3. Talk about irrelevant details
  4. use impolite or rude language

Which one is NOT a Verbal communication?

  1. formal letters
  2. informal letters
  3. job application
  4. attending interview

Complete the sentence with suitable describing words It is a ________ neighbourhood. One need not fear.

  1. expensive
  2. safe
  3. big
  4. good

A resume should be……

  1. having long and detailed information
  2. bold and colourful
  3. short and precise
  4. having acronyms and abbreviation

The Everest, the ----------------- peak in the world, ----------- in Tibet.

  1. highest, is
  2. higher, is
  3. highest, are
  4. high, is

The most frequently asked question in an interview is…….

  1. your feedback
  2. tell me about yourself
  3. your family background
  4. where do you live

Full form of GPS is……….

  1. Glob Position System
  2. Great Polar System
  3. Global Positioning System
  4. Global Planning System

Which one is a dont's in an interview?

  1. Turning up late
  2. Listen and respond
  3. Keep eye contact
  4. Do your home-work

You can maintain hygiene at the ________and __________levels.

  1. community, town
  2. city, community
  3. personal, community
  4. personal, village

__________safety is very important. All companies need to incorporate __________in their work place.

  1. workplace, safety
  2. safety, workplace
  3. workplaces, safest
  4. workplaces, safe

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