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
Correct Answer :
A. 2.592 x 105C
Related Questions
For maximum power transfera what is the relation between load resistance RL and internal resistance R of the voltage source?
RL= 2 r
RL= 1.5 r
RL= r
RL= 3 r
Which of the following does not affect resistance?
Resistivity
Cross-sectional area
Mass
Length
In an ac circuita the power dissipated as heat depends on
Impedance
Capacitive reactance
Resistance
Inductive reactance
What fusion of elements is without chemical action between them?
Mixture
Compound
Alloy
Ionization
What does a capacitor store?
Voltage
Charge
Current
Power
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
What is the form factor of a triangular wave?
And ideal current source has an internal conductance of _____ siem
Infinite
One
Zero
One million
Which of the following conditions is not true for a series RLCcircuit at resonance?
Z = jXL
XL= XC
The power factor is one
The magnitude of Z is
What is a rotating vector whose projection can represent either current or voltage in an ac circuit?
Polar diagram
Scalar quantity
Velocity
Phasor
The graph between an alternating quantity and time is called
Sine wave
Curve
Waveform
A plot
In a circuita a passive element is one which
Supplies energy
Receives energy
Both supplies and receives energy
Attenuates signal
What is the specific resistance of a pure germanium?
55 -cm
55 -m
55 -mm
55 k -m
In a series RLCcircuit
Increasing the frequency decreases the resistance
Increasing the frequency increases the resistance
Both XLand XCchange as frequency changes
Impedance will always decrease
A gang capacitor is a variable capacitor in which capacitance is varied by changing the
Dielectric
Number of plates
Plate area
Distance between plates
Electron flow assumes charges flow from
Negative to positive
Negative to negative
Positive to negative
Positive to positive
For a triangular and sawtooth waveform the rms voltage or current equals
0.707times peak value
0.577 times peak value
0.577times average value
0.707times rms value
Which of the statements below is not true?
Current source is an active element
Resistor is a linear element
Voltage source is a passive element
Diode is a non-linear element
The ratio between the reactive power and the apparent power of an ac load is called
Quality factor
Power factor
Power ratio
Reactive power
Delta to wye or wye to delta transformation technique is applied to a ___ network.
One-terminal
Two-terminal
Three-terminal
Complex
A circuit whose parameters change with voltage or current.
Non-linear circuit
Linear circuit
Complex circuit
Passive circuit
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
Which of the following elements is active?
Resistor
Inductor
Capacitor
Ideal voltage source
When current and voltage arte in phase in an ac circuita the ___ is equal to zero.
Resistance
Reactance
Inductance
Capacitance
An inductance of 1 mH is
0.001 H
0.01 H
0.0001 H
0.10 H
Norton�s theorem is ____ Thevenin�s theorem.
The same as
The converse of
Older that
More accurate than
A capacitive load always has a ______ power facto
Leading
Lagging
Zero
Unity
What determines the magnitude of electric current?
The rate at which electrons are produced
The type of material used
The current carrying capacity of the circuit
The rate at which electrons pass a given point
In a resonant circuita if Q ? 10 resonant frequency _______ bandwidth.
Bisects
Exceeds
Is less than
Is equal to
In a circuita an active element is one which
Supplies energy
Receives energy
Both supplies and receives energy
Amplifies signal