What theorem is generally used in the analysis of vacuum tubes?
Superposition theorem
Millman�s theorem
Thevenin�s theorem
Norton�s theorem
Correct Answer :
C. Thevenin�s theorem
Related Questions
The maximum power transfer theorem is used in
Power system
Electronic system
Refrigeration
Air conditioning
Series resonant circuit is sometimes known as
Rejector circuit
Acceptor circuit
Inductive circuit
Capacitive circuit
What does a capacitor store?
Voltage
Charge
Current
Power
Refers specifically to steady state values of quantities in ac circuits which are complex numbers.
Domain
Scalar quantity
Vector quantity
Phasor quantity
What is the cross-sectional are of a conductor whose diameter is 0.001 inch?
One micron
One angstrom
One steradian
One circular mil
In calculating maximum instantaneous power ___ voltage or current is used.
Peak
Average
Rms
Instantaneous
The temperature-resistance coefficient of pure gold is
Barium-strontium titanite dielectric material is also called
Ceramic
Polyster
Electrolytic
Bakelite
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 most convenient way of achieving large capacitance?
By using multiplate construction
By using air as dielectric
By decreasing distance between plates
By using dielectric of low permittivity
A tank circuit is a
Parallel LC circuit
Series LCcircuit
A resonant circuit
A non-resonant circuit
Of the equivalent combination of unitsa which one is not equal to watt?
2/V
AV
A2
J/s
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
What determines the direction of induced emf in a conductor or coil?
Cork screw rule
Fleming�s left hand rule
Ampere�s circuital law
Fleming�s right hand rule
What is the other name of relative permittivity?
Dielectric strength
Potential gradient
Breakdown voltage
Specific inductance capacity
Electron flow assumes charges flow from
Negative to positive
Negative to negative
Positive to negative
Positive to positive
What is the rms value of a square wave?
Equals its peak value
Equals its peak-to-peak value
Peak divided by square root of two
Peak divided by pi
Norton�s theorem is ____ Thevenin�s theorem.
The same as
The converse of
Older that
More accurate than
For multi-plate capacitora capacitance is proportional to
Number of plates less one(n ± 1)
Number of plates plus one(n + 1)
Number of plates less two(n - 2)
Number of plates (n)
What increases the resistance of wire at high frequencies?
Temperature
Voltage
Skin effect
Insulation
Which statement is true about a passive circuit?
A circuit with neither a source of current nor a source of potential difference
A circuit with a voltage source
A circuit with a current source
A circuit with only resistance as a load
In a circuita a passive element is one which
Supplies energy
Receives energy
Both supplies and receives energy
Attenuates signal
When current and voltage arte in phase in an ac circuita the ___ is equal to zero.
Resistance
Reactance
Inductance
Capacitance
Which of the following dielectric materials makes the highest-capacitance capacitor?
Air
Barium-strontium titanite
Mica
Electrolyte
What is the peak factor for alternating current or voltage varying sinusiodally?
A lead conductor has a resistance of 25 at 0 �C. Determine its resistance at -30 �C
High resistance values are a consequence of the ___ of the film.
Thickness
Length
Thinness
Area
What is a rotating vector whose projection can represent either current or voltage in an ac circuit?
Polar diagram
Scalar quantity
Velocity
Phasor
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
What capacitance exists not through design but simply because two conducting surfaces are relatively close to each other?
Surge
Stray
Natural
Normal