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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
YEAR1
EXAM DATE2023-07-24
EXAM TIME09:00:11:00
Question Paper MOCK TEST

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TRADE THEORY

Which semiconductor material is used to make diodes?

  1. Steel
  2. Copper
  3. Silicon
  4. Aluminium

Which extinguishes the fire on electrical equipment?

  1. Foam
  2. Oil
  3. Water
  4. Halon

Which type of insulation material is used in modern refrigerators?

  1. Saw dust
  2. Glass wool
  3. Poly urethane foam
  4. Thermocol

Which process is done first in split AC for shifting from one place to another?

  1. Evacuation
  2. Vacuumization
  3. Pump down
  4. Flushing

Which material is used to make the evaporator of refrigerator?

  1. Stainless steel
  2. Galvanized iron
  3. Aluminium
  4. Brass

Where the refrigerant is stored in split AC during pump down operation?

  1. Condenser
  2. Evaporator
  3. Compressor
  4. Accumulator

Which type of condenser is used in window Air conditioner?

  1. Natural convection
  2. Forced convection
  3. Evaporative
  4. Water cooled

Which type of compressor is used for domestic refrigerator?

  1. Open type compressor
  2. Semi sealed compressor
  3. Centrifugal compressor
  4. Hermetic compressor

What is the name of the tool used for bending sheet metal?

  1. Blow horn stake
  2. Bevel edged square stake
  3. Square stake
  4. Hatchet stake

What is the process of accumulation of ice on the surface of evaporator?

  1. Frosting
  2. Evacuating
  3. Defrosting
  4. Melting of frost

Which gas is used for flushing blocked capillary tube?

  1. Hydrogen
  2. Aqua ammonia
  3. Dry nitrogen
  4. Moist air

Which valve is closed during compression stroke in reciprocating compressor?

  1. Suction valve
  2. Discharge valve
  3. Service valve
  4. Liquid line valve

Which property is desirable for an ideal refrigerant?

  1. High boiling point
  2. High specify volume
  3. High freezing point
  4. High latent heat value

What tonnage capacity of split AC unit uses 150/200 MFD starting capacitor?

  1. 1 TR
  2. 2.0 TR
  3. 1.5 TR
  4. 2.5 TR

Which gas is used for Pressurizing and testing leakage of RAC system?

  1. O3
  2. SO2
  3. O2
  4. N2

Which operation is in progress with capacitor?

  1. Charging
  2. Testing
  3. Discharging
  4. Cleaning

What is the category of R 502 refrigerant?

  1. Azeotropes
  2. Hydrocarbon
  3. Halocarbon
  4. Organic compounds

What is the name of active component used in electronic circuit?

  1. TRIAC
  2. DIAC
  3. SCR
  4. Transistor

What is the advantage of using flux in brazing?

  1. Chemical reaction
  2. Melting tubes
  3. Over heating
  4. Prevent Oxidation

What is the function of refrigerant fluid in a refrigerator?

  1. Absorbs heat from bottom side cabinet
  2. Absorbs heat from outside the cabinet
  3. Releases heat inside the cabinet
  4. Absorbs heat from inside the cabinet

What is the control marked as X in compressor motor?

  1. OLP
  2. Compressor
  3. Relay
  4. Compressor terminal

Which component controls the thermostat and defrost heater in frost free refrigerator?

  1. OLP
  2. Thermo heater
  3. Relay
  4. Defrost timer

What is the unit of heat in M.K.S system?

  1. K.Cal (Kilo Calorie)
  2. K.W (Kilo Watt)
  3. B.T.U (British thermal unit)
  4. KV (Kilo Volt)

Which winding is made of thin wire in single phase motor?

  1. Main
  2. Running
  3. Series
  4. Starting

What is the name of component?

  1. Capacitor
  2. Resistor
  3. Diode
  4. Inductor

Which part of window AC removes dust particles from the room air?

  1. Filter drier
  2. Strainer
  3. Dehydrator
  4. Air filter

Which bearing is used in blower motor of indoor unit in ductable split air conditioner?

  1. Open ball bearing
  2. Thrust bearing
  3. Sleeve bearing
  4. Ball bearing

What is the advantage of a hermetically sealed compressor in refrigerator?

  1. Silent operation
  2. Cost is high
  3. Noise is more
  4. Easily serviceable

Which is adjusted to the size of electrode in welding process?

  1. Ampere
  2. Conductor
  3. Thickness
  4. Length

What is the part marked as X in refrigerator wiring?

  1. Over load protector
  2. Thermostat
  3. Compressor motor
  4. Relay

What is the name of part marked as X in evaporator?

  1. Capillary tube
  2. Sensor clamp
  3. Evaporator outlet
  4. Accumulator

What is the name of part marked as X?

  1. Rotor
  2. Main winding
  3. Centrifugal switch
  4. Stator

Which component actuates the defrost cycle in frost free refrigerator?

  1. Timer
  2. Relay
  3. Defrost heater
  4. Bimetal thermo

What is “smothering” in fire extinguishing?

  1. Cutting off oxygen supply to fire
  2. Use water to lower temperature
  3. Flashing with dry powder
  4. Pouring of CTC

What is the part marked as X in welding blow pipe?

  1. Mixing chamber
  2. Oxygen inlet connection
  3. Handle
  4. Neck pipe with nozzle

Which thermodynamic process the temperature is kept constant?

  1. Isothermal process
  2. Isobaric process
  3. Constant volume process
  4. Constant pressure process

Which lubricant oil is used in swash plate of R 134a compressor?

  1. Servo 20
  2. SAE - 40
  3. PAG
  4. Mineral oil

Which sheet is used to check the tightness of door gasket of a refrigerator?

  1. Rubber
  2. Plastic
  3. Zinc
  4. Copper

WORKSHOP CALCULATION AND SCIENCE

Which is the unit of current?

  1. Volt
  2. Watt
  3. Ohm
  4. Ampere

Which property of metal has its power of returning to its original shape after the applied force is released?

  1. Malleability
  2. Tenacity
  3. Elasticity
  4. Plasticity

Which metal contains iron as a major content?

  1. Bronze metal
  2. Brass metal
  3. Ferrous metal
  4. Zinc

What is termed as the quantity of matter contained in a body?

  1. Volume
  2. Density
  3. Mass
  4. Specific gravity

Which insulating material is used for making switches?

  1. P.V.C
  2. Ebonite
  3. Bakelite
  4. Porcelain

What is the area of a rectangle, whose length and breadth are 10cm and 8cm respectively?

  1. 85 cm2
  2. 80 cm2
  3. 75 cm2
  4. 90 cm2

ENGINEERING DRAWING

Which arrow head is correct as per standard?

Identify the conventional symbol of material?

  1. Steel
  2. Concrete
  3. Wood
  4. Glass

Identify the line 'b'?

  1. Termination of dimension line
  2. Extension line
  3. Dimension line
  4. Leader line

Identify the correct aligned system dimension?

Identify the name of tool?

  1. Try square
  2. Feeler gauge
  3. Surface gauge
  4. Steel rule

Which title block position is correct as standard practice?

EMPLOYABILITY SKILLS

Which punctuation mark should be used in the following sentence? Is there any site engineer here

  1. . (full stop)
  2. ? (question mark)
  3. ! (exclamation)
  4. , (comma)

A written description of duties and responsibilities to be carried out in a job is called ___________.

  1. job description
  2. job application
  3. resume
  4. CV

Choose the odd word.

  1. paper
  2. thanks
  3. sorry
  4. please

To be in a job or work is……

  1. Employ
  2. Skill
  3. Aptitude
  4. Knowledge

21st century workplace skills help you to get employed……

  1. even job market keep changing
  2. only with higher qualification
  3. very difficult
  4. only when market is growing

Which one is a social networking site?

  1. Face book
  2. Mozilla
  3. Outlook express
  4. Lotus notes

Which one is a “Don’t” of information security?

  1. Disclose password to anyone
  2. Encrypt laptop hard drive and mobile devices
  3. Use hard to guess passwords
  4. Take backup data of your PC periodically

Which of these is an essential step in the problem solving process?

  1. To report the problem to a higher-up
  2. To gather and analyze data
  3. To follow your instinct
  4. To think deeply about the problem

Which of these is not an online job search platform?

  1. Glassdoor
  2. Snapchat
  3. Indeed
  4. LinkedIn

Fill in the blank with proper pronoun. “She made this cake ___________”

  1. himself
  2. herself
  3. itself
  4. myself

Which one is an input device?

  1. Joystick
  2. Speaker
  3. Monitor
  4. Printer

What is a shortcut key for “select all” command?

  1. Ctrl + C
  2. Ctrl + V
  3. Ctrl + X
  4. Ctrl + A

In an email, where will you add the recipient email address whom you want to send the copy of an email?

  1. To
  2. CC
  3. Subject
  4. Bcc

Which of the following websites are not popular for finding jobs?

  1. LinkedIn.com
  2. Sheroes.com
  3. Twitter.com
  4. Naukri.com

NAPS Stands for….

  1. National Advertising Promotion Scheme
  2. National Appointment Promoting Scheme
  3. National Apprenticeship Promotion Scheme
  4. Non Apprenticeship Promotion Scheme

RTI is…

  1. Right To Information
  2. Ready To Information
  3. Read To Information
  4. Right Tern Information

A good way to respond to the question ‘Shall we start the discussion?’ is _______.

  1. To conclude
  2. Yes, let’s start.
  3. But, don’t you think?
  4. To sum up

For “SMART” Goal, S stands for_________

  1. strength
  2. social
  3. scientific
  4. specific

What should come next after “selecting the solution” in problem solving process?

  1. Look for alternate
  2. Implement the solution
  3. Identify the problem
  4. Root cause analysis

Gesture “Brisk and erect walking” shows

  1. defensiveness
  2. boredom
  3. insecurity
  4. confidence

In an economic growth, role of entrepreneur is to..............

  1. improve per capita income
  2. stagnate standard of living
  3. unbalance the regional development
  4. generate unemployment

In MS Excel, to insert a formula in cell, we must begin the entry with an operator ___________

  1. $
  2. =
  3. @
  4. #

The ability to do is…….

  1. Experience
  2. Skill
  3. Job
  4. Knowledge

A person who is associated with the starting of business is called…………….

  1. sales executive
  2. businessman
  3. merchant
  4. entrepreneur

The expansion of SIDO is…………

  1. Standard Industry Development Organization
  2. Small Income Development Organization
  3. Small Investment Development Organization
  4. Small Industries Development Organization
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