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For the following questions answer them individually
A static memory stores its data in:
Flip-flops
Inductors
Capacitors
Resistors
Which of the statements about the force between two charge is true?
Unlike charges repel each other
Like charges attract each other
No force exists between two unlike charges
A force of repulsion exists between two like charges
With the increase in the cross sectional area of the conductor, the value of resistance:
Increase
Remain same
Decrease
None of these
With the increase in the temperature the resistance of copper:
Become zero
Remain constant
The unit of electric energy is:
Watt
Kilo-watt
Kilo-watt-hour
Joule
In Series LCR circuit, at resonance:
Current is maximum and power factor is zero
Current is maximum and power factor is unity
Current is minimum and power factor is unity
To neglect a current source, the terminal across the sources are:
Open-circuited
Short-circuited
Replaced by some resistance
Replaced by capacitance
The generator which gives dc supply to the rotor is called:
Converter
Exciter
Inverter
Rectifier
The deflection torque can be produced by:
Gravity control
Spring control
Air friction
Magetically
Carbon brushes are used in electric motors to:
Brush off carbon deposit on the commutator
Provide a path for flow of current
Prevent overheating of armature windings
Prevent sparking during commutation
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