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
Correct Answer :
B. 0.577 times peak value
Related Questions
In a parallel bank with unequal branch resistances
The highest R has the highest I
The lowest R has the highest V
The lowest R has the highest V
The highest R has the highest V
Refers specifically to steady state values of quantities in ac circuits which are complex numbers.
Domain
Scalar quantity
Vector quantity
Phasor quantity
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
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Kirchhoff�s laws (KCL and KVL) are applicable to
DCcircuits
ACcircuits
DC as well as AC circuits
Passive networks alone
Which component opposes voltage change?
Resistor
Inductor
Capacitor
Transistor
What is the total resistance of a two equal valued resistors in series?
The difference of both
The product of both
Twice as one
The sum of their reciprocals
Thevenin�s theorem is what form of an equivalent circuit?
Current
Voltage
Both current and voltage
Neither current nor voltage
Series resonance occurs when
XL= XC
XL= R
Z = R
Both A and C
Which one of the following elements serves as a protection against overload?
Fuse
Switch
Resistor
Relay
In an ac circuit with XL and R in seriesa the
Voltages across R and XL are in phase
Voltage across R lags the voltage across XLby 90°
Voltages across R and XL are 180° outof-phase
Voltage across R leads the voltage across XLby 90°
Which of the following conditions is not true for a series RLCcircuit at resonance?
Z = jXL
XL= XC
The power factor is one
The magnitude of Z is
The symbol Q refers to
Resonance quotient
Quality factor
Power quotient
Qualification test
A capacitor is used to
Block dc current
Pass dc current
Open voltage source
Short the voltage source
For a parallel ACcircuita ___ is used as a reference phasor.
Voltage
Power
Current
Resistance
In adding or subtracting phasor quantitiesa ___ form is the most convenient.
Polar
Rectangular
Trigonometric
Exponential
What is the reading of an ohmmeter for a shorted capacitor?
Zero
Infinity
k
M
Another term for superconductor.
Generic conductor
Ultraconductor
Cryotron
Cryogenic conductor
The open-circuit voltage at the terminal of load RL is 60V. Under the condition of maximum power transfera the load voltage will be
60 V
15 V
20 V
30 V
What is the temperature coefficient of the resistance Eureka?
Infinity
Negative
Almost zero
Positive
What does a capacitor store?
Voltage
Charge
Current
Power
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
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 6 ��F means
6 pF
6 nF
6 fF
6 aF
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
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Leading
Lagging
Zero
Unity
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Inductive
Capacitive
Resistive
Infinite
Liquids that are good conductors because of ionization are called
Electrolytic
Bases
Acid
Electrolytes
Electric energy refers to
Volt divided by coulomb
Voltampere
Volt-coulomb
Watt divided by time
The mutual inductance between two coils is ___ the reluctance of magnetic path.
Directly proportional to
Inversely proportional to
Independent to
Equal to