In the 5-band method of capacitor color codinga the first band indicates
Temperature coefficient
Tolerance
1stdigit
Capacitance value
Correct Answer :
A. Temperature coefficient
Related Questions
For a series ACcircuita ___ is not used as a reference phasor.
Voltage
Impedance
Current
Conductance
Kirchhoff�s laws (KCL and KVL) are applicable to
DCcircuits
ACcircuits
DC as well as AC circuits
Passive networks alone
In calculating maximum instantaneous power ___ voltage or current is used.
Peak
Average
Rms
Instantaneous
A law which states that when a constant electromotive force is applied to a circuit consisting of a resistor and capacitor connected in seriesa the time taken for the potential on the plates of the capacitor to rise to any given fraction of its final value depends only on the product of capacitance and resistance.
Child�s law
CR law
Coulomb�s law
Debye T3 law
For a linear circuita ___ voltage or current is used to calculate average power.
Rms
Peak
Average
Instantaneous
Under the conditions of maximum power transfera a voltage source is delivering a power of 15 W to the load. What is the power generated by the source?
60 W
30 W
15 W
4 W
Delta to wye or wye to delta transformation technique is applied to a ___ network.
One-terminal
Two-terminal
Three-terminal
Complex
Refers specifically to steady state values of quantities in ac circuits which are complex numbers.
Domain
Scalar quantity
Vector quantity
Phasor quantity
And ideal current source has an internal conductance of _____ siem
Infinite
One
Zero
One million
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
The average value of a triangular or sawtooth wave is _____ times its peak value.
A three-by-threea series-parallel matrix of resistorsa all having the same ohmic valuea would have a net resistance of
One-third the value of a single resistor
Three times the value of a single resistor
The same value as a single resistor
Nine times the value of a single resistor
The wavelength of an alternating waveform depends upon the ___ of the variation.
Period
Number
Frequency
Amplitude
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
Which of the following is a preferred resistor value?
43a000
54a321
An open resistor when checked with an ohmmeter reads
Zero
Infinite
High but within the tolerance
Low but not zero
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
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 wavea 30 degrees of phase is ___ of a cycle.
½
Parallel resonant circuit is sometimes called as
Acceptor circuit
Rejector circuit
Inductive circuit
Capacitive circuit
The resistance of an insulator ___ when its temperature is increased.
Decreases
Remains the same
Increases
Varies
The unit of elastance is
Farad
Daraf
Siemen
Henry
Which of the following is the peakiest?
Square wave
Sinusoidal wave
Triangular wave
Rectangular wave
The second strip of an electronic resistor color-code represents
The multiplier
The second digit of the value
The temperature
The tolerance
A circuit whose parameters change with voltage or current.
Non-linear circuit
Linear circuit
Complex circuit
Passive circuit
If one resistance in a series connection is opena then
The current is zero in all the other resistances
The current is maximum in all the other resistances
The voltage is zero across the open resistance
The voltage is infinite across the open resistance
An intermittent and non-symmetrical alternating current like that obtained from the secondary winding of an induction coil
Faradic current
Transient ac current
Inductive current
Capacitive current
What is a rotating vector whose projection can represent either current or voltage in an ac circuit?
Polar diagram
Scalar quantity
Velocity
Phasor
What is the other name of relative permittivity?
Dielectric strength
Potential gradient
Breakdown voltage
Specific inductance capacity
The value of temperature coefficient ( ) is dependent upon
The nature of material and temperature
The length of material
The cross-sectional area of the material
The volume of the material