What is the purpose of a load in an electric circuit?
To increase the circuit current
To decrease the circuit current
To utilize electrical energy
To make the circuit complete
Correct Answer :
C. To utilize electrical energy
Related Questions
What theorem is generally used in the analysis of vacuum tubes?
Superposition theorem
Millman�s theorem
Thevenin�s theorem
Norton�s theorem
The voltage cannot be exactly in phase with the current in a circuit that contains
Only capacitance
Only resistance
Inductance and capacitance
Inductancea capacitance and resistance
What is the other name of relative permittivity?
Dielectric strength
Potential gradient
Breakdown voltage
Specific inductance capacity
In adding or subtracting phasor quantitiesa ___ form is the most convenient.
Polar
Rectangular
Trigonometric
Exponential
What dielectric is generally employed by a variable capacitor?
Mica
Air
Electrolyte
Ceramic
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
When two complex conjugates are subtracteda the result is a
Quadrature component only
Complex component
In-phase component
Real component
The temperature coefficient of resistance of electrolytes is
Negative
Positive
Zero
Infinite
An inductive circuit of resistance 16.5 and inductance of 0.14 H takes a current of 25 ?. if the frequency is 50 Hza find the supply voltage.
1501 V
1174V
1877V
991 V
At what frequency will the current in a series RLCcircuit reach its maximum value for an applied voltage of 15 V with R = 500 a L = 100 H and C= 0.001 F?
503 kHz
403 kHz
603 kHz
303 kHz
A gang capacitor is a variable capacitor in which capacitance is varied by changing the
Dielectric
Number of plates
Plate area
Distance between plates
An inductive load always has a ___ power factor
Leading
Lagging
Zero
Unity
A capacitor consists of two
Conductors only
Dielectric only
Conductors separated by a dielectric
Dielectric separated by a conductor
Electric energy refers to
Volt divided by coulomb
Voltampere
Volt-coulomb
Watt divided by time
Which statement is true?
A series resonant circuit is of high impedance
A parallel resonant circuit is of low impedance
A series resonant circuit is inductive if it operates at a frequency higher than the resonant frequency
A parallel resonant circuit is inductive if it operates at a frequency higher than the resonant frequency
Metal tin becomes superconductor at approximately
6 K
3.7 K
5 K
4.7K
What is the reciprocal of capacitance?
Reluctance
Susceptance
Elastance
Conductance
What is the total effective capacitance of two 0.25 F capacitors connected in series?
0.125 F
1.25 F
0.50 F
2.5 if
A capacitance of 0.05 F equals
0.05 x 106F
0.05 x 10-6F
0.05 x 10-12F
0.05 x 1012F
When the temperature of copper wire is increased its resistance is
Increased
Decreased
Constant
Zero
The wavelength of an alternating waveform depends upon the ___ of the variation.
Period
Number
Frequency
Amplitude
When resistance are connected in parallela the total resistance is
Less than the smallest resistance in the connection
Greater than the smallest resistance in the connection
Between the smallest and greatest resistance in the connection
Increasing and decreasing depending upon the supply voltage
Which of the following is not a factor affecting capacitance oor?
Area of plates
Number of plates
Distance between plates
Dielectric material used
What is the value of a carbon composition resistor with the following color code: Browna whitea orangea red
190 ; 10 %
19 k ; 2 %
19 k ; 20 %
1.9 k ; 2 %
How many degrees of phase represents one full cycle?
What is the hot resistance of a 100 Wa 220 V incandescent lamp?
Which of the following capacitors are used only in dc circuits?
Mica
Ceramic
Mylar
Electrolytic
A factor that states how much the resistance changes for a change in temperature?
Resistivity
Specific resistance
Coefficient of temperature change
Temperature coefficient of resistance
At parallel resonancea the currents flowing through L and C are
Infinite
Zero
Unequal
Equal
What is the form factor of a triangular wave?