Refrigeration and Air Condition Technician First Year MCQ

Produce Sheet metal components Identify electrical safety. Join different wire, measure power, currents, volts and earth resistance etc. Connect single phase, 3 phase motors i.e. star and delta connections. Identify the electronic components and their colour code i.e. transistor, capacitor, diode, amplifier, I.C and able to work soldering. Perform gas welding, brazing, soldering observing related safety. Identify RAC tools and equipment and recognize different parts of RAC system. Perform copper tube cutting, flaring, swaging, brazing. Test mechanical & electrical components. Perform leak test, vacuuming, gas charging, wiring & installation of refrigerator.

Perform door alignment, door gasket fitting, replace door switch. Test compressor motor terminal, start compressor Direct with relay & without relay, technique of flushing, leak testing, replacing capillary & filter drier, evacuation & gas charging. Check components of frost-free refrigerator (electrical / mechanical), wiring of frost-free freeze & air distribution in refrigerator sector. Leak detection, evacuators & gas charging. Dismantle, repair and assemble hermetic, fixed and variable speed compressor, and test performance. Identify the terminals of sealed compressor and their wiring and measure current, volts, watts and use of DOL starter with different types of motors Perform selection of Hermetic compressor for different appliances, starting methods, testing controls & safety cut out used in sealed compressor. Identify the components of control system of Inverter A.C and wiring of control systemPerform servicing & de-scaling of condenser (internals &externals) used in different appliances

Perform fitting & adjustment of drier, filter & refrigerant controls used in different refrigeration system.Perform servicing of different evaporator used in different appliances.Carry out Recovery and Recycling of Refrigerant used, alternative of CFC, HFC re-cover, transfer & handling of gas cylinders.Retrofit CFC/HFC machine with ozone friendly refrigerant with understanding of the compatibility.Pack thermal insulation and prevent cooling leakage.

Install window AC, test Electrical & electronics components & Fault diagnosis & remedial measures.Perform servicing of electrical & electronic control test, installation, wiring, fault finding & remedial measures of different split AC.Perform servicing of car AC. Fault diagnosis & remedial measures