The reciprocal of a complex number is
A complex number
A real number
An imaginary number
A whole number
Correct Answer :
A. A complex number
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Provides higher current
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Provides wider tolerance
Which of the following is the statement of Ohm�s law?
Electric current is directly proportional to both voltage and resistance
Electric current varies directly as the voltage and inversely as the resistance
Electrical power is directly proportional to the resistance and inversely as the current squared
Electrical power is directly proportional to both voltage squared and the resistance
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Increase the voltage rating compared with one resistor alone
Reduce the voltage rating compared with resistor alone
Result in an expensive circuit
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Electric shock
Effects produced
Magnetic shock
Flashing
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Manganin
Carbon
Bronze
German silver wire
In a pure capacitancea
Current leads voltage by 90�
Current leads voltage by 180�
Current lags voltage by 90�
Current lags voltage by 180�
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50 V
100 V
200 V
400 V
A gang capacitor is a variable capacitor in which capacitance is varied by changing the
Dielectric
Number of plates
Plate area
Distance between plates
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Square wave
Triangular wave
Sine wave
Sawtooth
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Conductive
Resistive
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Zero
Low
High
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Temperature coefficient
Tolerance
1stdigit
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This makes the operation of appliances independent with each other
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43a000
54a321
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Cos
Tan
Sin
Sec
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Increases
Decreases or increases
Decreasesa increases or remains the same
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Specific resistance
Coefficient of temperature change
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Fuse
Switch
Resistor
Relay
The result of rust in electrical (wire) connection is
Inductance
Conductance
Impedance
Resistance
What is the efficiency under the conditions of maximum power transfer?
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Sinusoidal
Square wave
Triangular
Sawtooth
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Paper
Mica
Air
Electrolyte
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Number of plates
Dielectric
Distance between plates
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Thermocouple
An inductance of 1 mH is
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400 G
400 k
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One micron
One angstrom
One steradian
One circular mil
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Shorting the load terminals
Opening the voltage source
Shorting the voltage source