The reason why electrical appliances are connected in parallel.
It is a simple circuit
This makes the operation of appliances independent with each other
This results in reduced power consumption
All of the above
Correct Answer :
B. This makes the operation of appliances independent with each other
Related Questions
When two complex conjugates are subtracteda the result is a
Quadrature component only
Complex component
In-phase component
Real component
The average value of a triangular or sawtooth wave is _____ times its peak value.
The maximum power transfer theorem is used in
Power system
Electronic system
Refrigeration
Air conditioning
The distance between the capacitor plates increases two timesa then its capacitance
Increases two times
Increases four times
Decreases two times
Decreases four times
What is the specific resistance of a pure germanium?
55 -cm
55 -m
55 -mm
55 k -m
What is the total capacitance of 10 capacitorsa each of 20 F in series?
200 F
2 F
100 F
0.5 F
Effects of capacitance
It opposes any change in the amount of voltage
Voltage is lagged behind the current by a quarter cycle
Electric energy is stored in the capacitor in the form of electrostatic field
All of the above
Delta to wye or wye to delta transformation technique is applied to a ___ network.
One-terminal
Two-terminal
Three-terminal
Complex
What is the reciprocal of quality factor?
Power factor
Reactive factor
Dissipation factor
1/Q factor
In a rectangular wavea the peak factor is
The internal resistance of an ideal current source is
Infinite
Zero
Equal to the load resistance
To be determined
What increases the resistance of wire at high frequencies?
Temperature
Voltage
Skin effect
Insulation
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
In a series circuit with unequal resistances the
Highest R has the highest V
Lowest R has the highest V
Lowest R has the highest I
Highest R has the highest I
Form its definitiona the unit of electric fielda is the N/C and equivalent unit of is the
V(m)2
V(m)
V/m2
V/m
According to Gauss theorema flux can be equated to
Charge
Field intensity
Current
Voltage
At parallel resonancea the currents flowing through L and C are
Infinite
Zero
Unequal
Equal
The reason why alternating current can induce voltage is
It has high peak value
It has a stronger magnetic field than direct current
It has a constant magnetic field
It has a varying magnetic field
A switch designed to have low capacitance between its terminal when open.
LOCAP switch
AntiLOCAP switch
Anticapacitance switch
Capacitance switch
If the inductance is decreaseda the impedance of the circuit containing a resistor a capacitor and an inductor connected in series to an ac source
Decreases
Increases
Decreases or increases
Decreasesa increases or remains the same
When two coils of identical reactance are in parallel without mutual inductancea the reactance of the combination is ___ the reactance of each coil.
One half
Twice
Four times
One fourth
When two pure sine waves of the same frequency and the same amplitude which are exactly 180� outof-phase are added togethera the result is
A wave with twice the amplitude
A wave with half the amplitude
Zero signal
A wave with twice the frequency
A coil of inductance L has an inductive reactance of XLin an ac circuit in which the effective current is I. The coil is made from a superconducting material. The rate at which power is dissipated in the coil is
I2XL
IXL
IXL2
Series resonance occurs when
XL= XC
XL= R
Z = R
Both A and C
A resistor wound with a wire doubled back on itself to reduce the inductance.
Bifilar resistor
Wire-wound resistor
Anti-inductive resistor
Bleeder resistor
What is the form factor of a triangular wave?
How many coulombs are delivered by a storage battery in 25 hours if it is supplying current at the rate of 3 A?
2.592 x 105C
2.592 x 103 C
2.592 x 108 C
2.592 x 1012 C
When the net reactance in a series coil-capacitor circuit is zero at frequency fa the nature of its reactance of frequency 2f is
Inductive
Capacitive
Resistive
Infinite
If two equal resistances connected in series across a certain supply are now connected in parallel across the same supplya the power produced will be _____ that of series connection
One-half
One-fourth
Two times
Four times
If a certain circuit has a current that is lagging the voltage by 45�a then it displays
Pure inductive reactance
Resistance and capacitance reactance
Resistance and inductive reactance
Pure capacitive reactance