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WorksheetsUntitled Quiz
Total questions: 20
Worksheet time: 15mins
The frame of an induction motor is usually made of
Silicon steel
Cast iron
Alluminium
Bronze
The Shaft of an induction motor is made of
High speed steel
Stain less steel
Carbon steel
Cast iron
The Slip ring are usually made of
Copper
Carbon
Phospor bronze
Alluminium
The Starting torque of a squirrel cage induction motor is
Low
Negligible
Same as full load toque
Slighlty more than full load torque
The maximum torque in an induction motor depends on
Frequency
Rotor inductive reactance
Square of supply voltage
All of the above
An 3-Phase induction motor is
Self Starting with zero torque
Self Starting with high torque
Self Starting with low torque
NON Self Starting
A 3-phase slip ring motor has
Double cage rotor
Wound rotor
Short circuited rotor
Any of the above
The resistance of human body is around
5 ohms
25 ohms
250 ohms
1000 ohms
The S.I Units of power is
Henry
Coulomb
Watt
Watt-hour
Electric pressure is also called
Resistance
Power
Voltage
Energy
Which is the best conductor of electricity ?
Iron
Silver
Copper
Carbon
The filament of an electric bulb is made of
Carbon
Alluminium
Tungsten
Nickel
An electric filament bulb can be worked from
DC Supply only
AC Supply only
Battery supply only
All of the above
The unit of capacitance are
Volt/coulomb
Coulomb/volt
Ohms
Henry/Wb
A Dielectric material must be
Resistor
Insulator
Good conductor
Semi-conductor
A magnet does not attract
Cobalt
Nickel
Copper
Iron
The direction of magnetic lines of force is
South pole to north pole
North pole to South pole
One end of the magnet to another
None of the above
Temporary magnets are used in
Loud speakers
Generators
Motors
All of the above
The capacity of a cell is measured in
Amperes
Amperes-hours
Watt
Watt-hours
Which of the following materials is used in solar cell ?
Barium
Silicon
Silver
Selenium
