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Which material is used to make heating element? Silver Copper Nichrome Aluminium

What is the name of the part of electric iron?

Sole plate Pressure plate Mica insulation Asbestos sheet

What is the function of stirrer motor in microwave oven? Draws cooling air inside Spreads the heat uniformly Exhausts the hot air outside Revolves and reflects the electromagnetic energy

What is the purpose of U bend marked as X in geyser?

Prevents draining of water Avoids the forming of scales Reduces the pressure of outlet pipe Restricts the air locking inside the tank

Which type of A.C single phase motor is used in food mixer? Universal motor Repulsion motor Split phase motor Shaded pole motor

Which is the position for maximum output of the heater?

Position 1 Position 2 Position 3 Position 4

Which formula is used to calculate the heat generated as per Joules law? Heat generated = IRT / J cal Heat generated = |2RT /Jcal Heat generated = IR2T/Jcal Heat generated = (IR)2 T/Jcal

Calculate the heat generated in a electric heater of 1000 watt, 240 volt, worked for 5 minutes? 70.5 kilo calories 71.0 Kilo calories 71.6 Kilo calories 72.1 Kilo calories

What is the purpose of protection grooves at various places in a heater base plate? Radiate the heat properly Retain the heating element firmly Place the vessels firmly on heater plate Protect the heating element from damage

What is the purpose of sole plate in electric kettle? Acts as a balancing weight Acts as an insulator for element Protect the kettle base from damage Keep the element in close contact with container

What is the magnetron tube filament voltage used in microwave oven? 1.5 V A.C 2.0 V A.C 3.0 V A.C 3.2 V A.C

What is the fault in a food mixer if it runs intermittently? Worn out brushes Armature coil open Defective commutator Field winding partially short

What is the defect in a single phase pump motor if it runs with slow speed? Defective capacitor Open starting winding Short in starting winding Short in running winding

What is the function of neutral path in AC supply system for appliances? Provides current return path Provides level constant Reduces voltage drop in wiring Maintains load current constant

What is the function of magnetron tube in a microwave oven? Amplifies the microwave signal Changes the polarity every half cycle Oscillate and produce cooking frequency Converts microwave energy to electrical energy

Which type of motor is used in the wet grinder? Universal motor Repulsion motor Capacitor start induction run motor Capacitor start capacitor run motor