Which of the following is the peakiest?
Square wave
Sinusoidal wave
Triangular wave
Rectangular wave
Correct Answer :
C. Triangular wave
Related Questions
For series capacitorsa total charge is
The sum of individual charges
Equal to the charge of either capacitors
Equal to the product of the charges
The quotient of the charges
What capacitance exists not through design but simply because two conducting surfaces are relatively close to each other?
Surge
Stray
Natural
Normal
Leakage resistance in a capacitor results into
Internal heating
Internal bleeding
Shorter useful life
Short-circuiting
If a certain circuit has a current that is lagging the voltage by 45�a then it displays
Pure inductive reactance
Resistance and capacitance reactance
Resistance and inductive reactance
Pure capacitive reactance
Which waveform in which the rms value and the mean value are equal?
Square wave
Triangular wave
Sine wave
Sawtooth
An inductor carries 2 A dc. If its inductance is 100 Ha then what is its inductive reactance?
Zero
1.3 k
What rating of a resistor determines its ability to absorb heat?
Wattage
Ohmic
Current
Voltage
In an ac circuita the power dissipated as heat depends on
Impedance
Capacitive reactance
Resistance
Inductive reactance
Electron flow assumes charges flow from
Negative to positive
Negative to negative
Positive to negative
Positive to positive
The second strip of an electronic resistor color-code represents
The multiplier
The second digit of the value
The temperature
The tolerance
What is the total capacitance of 10 capacitorsa each of 20 F in series?
200 F
2 F
100 F
0.5 F
The current is ____ times the maximum current at half-power points of a resonance curve.
And ideal current source has an internal conductance of _____ siem
Infinite
One
Zero
One million
The area of capacitor plates increases two timesa then its capacitance
Increases two times
Increases four times
Decreases two times
Decreases four times
For a series ACcircuita ___ is not used as a reference phasor.
Voltage
Impedance
Current
Conductance
What is the reciprocal of capacitance?
Reluctance
Susceptance
Elastance
Conductance
If three 9 mH inductors are connected in parallel without mutual inductance then the total i nductance is
3 mH
9 mH
27mH
18 mH
A series RL circuit has R of 10 and XL of 5 a its impedance in rectangular form is given by
10 +j 5
10 + j 10
10 ± j 5
10 ± j 10
The power factor of a circuit is equal to
RZ
XC/Z
XL/Z
R/Z
The Q-factor of a parallel resonant circuit is also known as
Current magnification factor
Voltage magnification factor
Load factor
Leakage factor
Which of the following describes the action of a capacitor?
Stores electrical energy
Opposes changes in current flow
Creates a dc resistance
Converts ac to dc
The electric field strength between capacitor plates has a unit
Volts per meter
Volts per mil
Amperes per meter
Amperes per mil
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
The unit of elastance is
Farad
Daraf
Siemen
Henry
If the output resistance of a voltage source is 4 a it internal resistance should be
Infinite
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
Of the equivalent combination of unitsa which one is not equal to watt?
2/V
AV
A2
J/s
Which of the following capacitors are used only in dc circuits?
Mica
Ceramic
Mylar
Electrolytic
Which of the following has negative temperature coefficient?
Carbon
Nickel
Brass
Constantan
Which one of the following elements serves as a protection against overload?
Fuse
Switch
Resistor
Relay