Norton�s theorem is what form of an ac equivalent circuit?
Voltage
Current
Both voltage and current
Neither voltage nor current
Correct Answer :
B. Current
Related Questions
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
Norton�s theorem is what form of an ac equivalent circuit?
Voltage
Current
Both voltage and current
Neither voltage nor current
What is the total resistance of a two equal valued resistors in series?
The difference of both
The product of both
Twice as one
The sum of their reciprocals
At parallel resonancea the currents flowing through L and C are
Infinite
Zero
Unequal
Equal
When the power factor of a circuit is zeroa
Power absorbed is maximum
Power absorbed is minimum
Power absorbed is zero
The impedance is minimum
What is the temperature coefficient of the resistance Eureka?
Infinity
Negative
Almost zero
Positive
An electric circuit contains
Passive elements
Active elements
Both active and passive elements
Reactive elements
When frequency of an ac wave decreasesa the value of XLin a coil
Approaches zero
Gets larger positively
Gets larger negatively
Stays constant
Which of the following capacitors is suitable for dc filter circuits?
Mica
Ceramic
Paper
Electrolytic
What is the specific resistance of a pure silicon?
55 -mm
55 -m
55 -cm
55 k -m
What is the other name of relative permittivity?
Dielectric strength
Potential gradient
Breakdown voltage
Specific inductance capacity
A capacitor is basically constructed of
Two conductors separated by a dielectric
Two dielectric separated by a conductor
Conductors and dielectric
Conductors and semiconductors
Voltage resonance means
Series resonance
Parallel resonance
Current magnification
Gain magnification
In a circuita a passive element is one which
Supplies energy
Receives energy
Both supplies and receives energy
Attenuates signal
In adding or subtracting phasor quantitiesa ___ form is the most convenient.
Polar
Rectangular
Trigonometric
Exponential
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
If three 100-pF capacitors are connected in seriesa then the total capacitance is
300 pF
100 pF
50 pF
33.3 pF
A linear circuit is one whose parameters
Change with change in voltage
Change with change in current
Do not change with voltage and current
Change with change in voltage and current
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
If voltage across the plates of 2 F capacitor is increased by 4 Va then charge on the plates will
Decrease by 2 C
Increase by 2 C
Decrease by 4 C
Increase by 4C
Points to be considered in choosing a capacitor
Working voltage
Type of dielectric
Capacitance
All of the above
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
Which of the following is neither a basic physical law nor deliverable from one?
Ohm�s law
Coulomb�s law
Kirchhoff�s first law
Kirchhoff�s second law
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
The temperature coefficient of resistance of electrolytes is
Negative
Positive
Zero
Infinite
The power factor of a certain circuit in which the voltage lags behind the current is 80 %. To increase the power to 100 %a it is necessary to add ___ to the circuit.
Inductance
Capacitance
Resistance
Impedance
In a rectangular wavea the form factor is
Norton�s theorem is ____ Thevenin�s theorem.
The same as
The converse of
Older that
More accurate than
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
The second strip of an electronic resistor color-code represents
The multiplier
The second digit of the value
The temperature
The tolerance