Capacitance increase with
Larger plate area and less distance between plates
Larger plate area and greater distance between plates
Smaller plate area and less distance between plates
Higher values of applied voltage
Correct Answer :
A. Larger plate area and less distance between plates
Related Questions
Which of the following is not considered a physical factor affecting resistance?
Length
Material type
Temperature
Cross-sectional
What is the conductance of a circuit having three 10 resistors in parallel?
0.3 S
3.33 S
0.33 S
30 S
In an ac circuit with XL and R in seriesa the
Voltages across R and XL are in phase
Voltage across R lags the voltage across XLby 90°
Voltages across R and XL are 180° outof-phase
Voltage across R leads the voltage across XLby 90°
For parallel capacitorsa total charge is
The sum of individual charges
Equal to the charge of either capacitors
Equal to the product of the charges
The quotient of the charges
If a coil has a Q of 10a it means that
The energy stored in the magnetic field of the coil is 10 times the energy wasted in its resistance
The energy wasted in its resistance is 10 times the energy stored in the magnetic field of the coil
It is a low Q coil
It is a high Q coil
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
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
An ac series circuit is composed of a resistance of 20 a inductive reactance of 40 a and a capacitive reactance of 15 . If a current of 1 ampere is flowinga what is the applied voltage
320 V
32 V
220 V
22 V
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
An inductive load always has a ___ power factor
Leading
Lagging
Zero
Unity
In liquids and gasesa ionization current results from a flow of
Positive or negative ions
Free electrons
Ions that are lighter in weight than electrons
Protons
Which of the following is also known as antiresonant circuit?
Parallel resonant circuit
Series resonant circuit
Tuned circuit
Tank circuit
The current is ____ times the maximum current at half-power points of a resonance curve.
³Any resistance R in a branch of a network in which a current I is flowing can be replaced by a voltage equal to IR�. This states
Compensation theorem
Reciprocity theorem
Millman�s theorem
Superposition theorem
Voltage resonance means
Series resonance
Parallel resonance
Current magnification
Gain magnification
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
What rating of a resistor determines its ability to absorb heat?
Wattage
Ohmic
Current
Voltage
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
Parallel resonant circuit is sometimes called as
Acceptor circuit
Rejector circuit
Inductive circuit
Capacitive circuit
Transient period is considered over after
A switch designed to have low capacitance between its terminal when open.
LOCAP switch
AntiLOCAP switch
Anticapacitance switch
Capacitance switch
Points to be considered in choosing a capacitor
Working voltage
Type of dielectric
Capacitance
All of the above
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
When the movable plates of a gang capacitor completely overlap the fixed platesa the capacitance of the capacitor is
Halfway between maximum and minimum
Maximum
Minimum
Zero
The distance between the capacitor plates increases two timesa then its capacitance
Increases two times
Increases four times
Decreases two times
Decreases four times
A capacitor is used to
Block dc current
Pass dc current
Open voltage source
Short the voltage source
For a series ACcircuita ___ is not used as a reference phasor.
Voltage
Impedance
Current
Conductance
What dielectric is generally employed by a variable capacitor?
Mica
Air
Electrolyte
Ceramic
An open inductor has
Zero resistance and infinite inductance
Infinite resistance and zero inductance
Infinite resistance and infinite inductance
Zero resistance and zero inductance
An inductance of 1 mH is
0.001 H
0.01 H
0.0001 H
0.10 H