As applied to a series RLCcircuita bandwidth means
The frequency range for maximum power transfer
The difference between the highest and lowest frequencies of the oscillator
The separation of the half-power points
The frequency at which XL= XC
Correct Answer :
C. The separation of the half-power points
Related Questions
What rating of a resistor determines its ability to absorb heat?
Wattage
Ohmic
Current
Voltage
Points to be considered in choosing a capacitor
Working voltage
Type of dielectric
Capacitance
All of the above
The reactance curve is a plot of frequency versus _____ for a series RLCcircuit
Current
Voltage
Gain
Impedance
If two equal resistances connected in series across a certain supply are now connected in parallel across the same supplya the power produced will be _____ that of series connection
One-half
One-fourth
Two times
Four times
For a series ACcircuita ___ is not used as a reference phasor.
Voltage
Impedance
Current
Conductance
What is a closed path made of several branches of the network called?
Junction
Node
Terminal
Loop
A neon glow lamp used as a night light ionizes at approximately
70 V
80 V
90 V
100 V
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
In an ac circuit with a resistive branch and an inductive branch in parallela the
Voltage across the inductance leads the voltage across the resistance by 90°
Resistive branch current is 90° out of phase with the inductive branch current
Resistive and inductive branch currents have the same phase
Resistive and inductive branch currents are 180° outof-phase
According to Gauss theorema flux can be equated to
Charge
Field intensity
Current
Voltage
A capacitor of 0.5 F charged to 220 V is connected across an uncharged 0.5 F capacitor. What is the voltage across each capacitor?
220 V
150 V
110 V
22 V
The Q-factor of a series resonant circuit is also known as
Current magnification factor
Voltage magnification factor
Load factor
Leakage factor
What is the most common non-sinusoidal waveform?
Square wave
Triangular wave
Trapezoidal wave
Sawtooth wave
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
What is the specific resistance of a pure germanium?
55 -cm
55 -m
55 -mm
55 k -m
A capacitive load always has a ______ power facto
Leading
Lagging
Zero
Unity
What is the total effective capacitance of two 0.25 F capacitors connected in series?
0.125 F
1.25 F
0.50 F
2.5 if
A tank circuit is a
Parallel LC circuit
Series LCcircuit
A resonant circuit
A non-resonant circuit
What is the complex impedance of a circuit with an absolute resistance of 300 ?
0 + j 300
300 + j 90
0 ± j 300
300 +j 0
Another term of the quality factor of the resonant circuit.
Figure of merit
Figure of demerit
Noise factor
Noise figure
The reciprocal of a complex number is
A complex number
A real number
An imaginary number
A whole number
Which of the following is a preferred resistor value?
43a000
54a321
Which factor does not affect resistance?
Length
Resistivity
Cross-sectional area
Mass
What is the temperature coefficient of the resistance Eureka?
Infinity
Negative
Almost zero
Positive
In a complex resistance-reactance planea XLis represented
By an axis opposite the R axis
By an axis perpendicular to the XC axis
By an axis opposite the XCaxis
By an axis parallel to the R axis
What is the hot resistance of a 100 Wa 220 V incandescent lamp?
A series RLCcircuit consists of a 10 resistor in series with L = 10 Ha and C= 100 F. Determine a new value of Ia for which the resonant frequency is one ±half the original value.
40 H
40 mH
40 pH
40 nH
The internal resistance of an ideal voltage source is
Infinite
Equal to the load resistance
Zero
To be determined
A series-parallel combination of identical resistors will
Increase the power rating compared with one resistor alone
Increase the voltage rating compared with one resistor alone
Reduce the voltage rating compared with resistor alone
Result in an expensive circuit
When two unequal values of resistors are connected in parallel across a dc sourcea greater current flows through the
Higher resistance
Lower resistance
Higher wattage resistance
Lower wattage resistance