If two complex conjugates are addeda ___ components results.
In-phase
Quadrature
Complex
Outof-phase
Correct Answer :
A. In-phase
Related Questions
The temperature coefficient of resistance of electrolytes is
Negative
Positive
Zero
Infinite
Which of the following is a disadvantage of a wire-wound resistor?
It has reactance in radio-frequency circuits
It cannot handle much power
It draws a large amount of current
It cannot handle high voltage
What is the specific resistance of a pure silicon?
55 -mm
55 -m
55 -cm
55 k -m
The graph between an alternating quantity and time is called
Sine wave
Curve
Waveform
A plot
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
The second strip of an electronic resistor color-code represents
The multiplier
The second digit of the value
The temperature
The tolerance
A capacitance of 0.05 F equals
0.05 x 106F
0.05 x 10-6F
0.05 x 10-12F
0.05 x 1012F
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
When two complex conjugates are subtracteda the result is a
Quadrature component only
Complex component
In-phase component
Real component
A capacitor requires 12 C of charge to raise its potential of 3 V. What is the capacitance of the capacitor?
36 F
15 F
0.25 F
4 F
In a circuita a passive element is one which
Supplies energy
Receives energy
Both supplies and receives energy
Attenuates signal
A capacitor is basically constructed of
Two conductors separated by a dielectric
Two dielectric separated by a conductor
Conductors and dielectric
Conductors and semiconductors
The area of capacitor plates increases two timesa then its capacitance
Increases two times
Increases four times
Decreases two times
Decreases four times
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
At what frequency will the current in a series RLCcircuit reach its maximum value for an applied voltage of 15 V with R = 500 a L = 100 H and C= 0.001 F?
503 kHz
403 kHz
603 kHz
303 kHz
A trimmer is a variable capacitor in which capacitance is varied by changing the
Number of plates
Dielectric
Distance between plates
Plate area
Barium-strontium titanite dielectric material is also called
Ceramic
Polyster
Electrolytic
Bakelite
The ratio of W/VA in an ac circuit means
Power factor
Reactive factor
Quality factor
Load factor
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
The reason why alternating current can induce voltage is
It has high peak value
It has a stronger magnetic field than direct current
It has a constant magnetic field
It has a varying magnetic field
Property of an electric circuit that dissipates electric energy
Reactance
Impedance
Resistance
Conductance
What fusion of elements is without chemical action between them?
Mixture
Compound
Alloy
Ionization
What is the form factor of a triangular wave?
What is the specific resistance of a pure germanium?
55 -cm
55 -m
55 -mm
55 k -m
When the net reactance in a series coil-capacitor circuit is zero at frequency fa the nature of its reactance of frequency 2f is
Inductive
Capacitive
Resistive
Infinite
In a resonant circuita if Q ? 10 resonant frequency _______ bandwidth.
Bisects
Exceeds
Is less than
Is equal to
In adding or subtracting phasor quantitiesa ___ form is the most convenient.
Polar
Rectangular
Trigonometric
Exponential
Which of the following represents the energy stored in a cap
CV2/2
2Q2/C
C2/V
CV
The current is ____ times the maximum current at half-power points of a resonance curve.
Which of the following is a common material used in wire-wound resistors?
Manganin
Carbon
Bronze
German silver wire