What is the peak factor of a triangular wave?
Correct Answer :
B.
Related Questions
What dielectric is generally employed by a variable capacitor?
Mica
Air
Electrolyte
Ceramic
A lead conductor has a resistance of 25 at 0 �C. Determine its resistance at -30 �C
Another term for superconductor.
Generic conductor
Ultraconductor
Cryotron
Cryogenic conductor
What is the time constant for L of 240 mH in series with R of 20 ?
12 ms
4.8 s
83.3 s
12 s
Which of the following dielectric materials makes the lowest-capacitance capacitor?
Paper
Mica
Air
Electrolyte
In a complex number 5 + j 10a 10 is called ___ part.
Imaginary
Real
Conjugate
Integer
What is the value of a carbon composition resistor with the following color code: Browna whitea orangea red
190 ; 10 %
19 k ; 2 %
19 k ; 20 %
1.9 k ; 2 %
The usual load of a dc circuit is a/an
Resistor
Capacitor
Inductor
Both inductor and capacitor
What is the conductance of a circuit having three 10 resistors in parallel?
0.3 S
3.33 S
0.33 S
30 S
How many degrees of phase represents one full cycle?
Norton�s theorem is ____ Thevenin�s theorem.
The same as
The converse of
Older that
More accurate than
What is the peak factor of a triangular wave?
The superposition theorem is used when the circuit contains
Reactive elements
Active elements
Number of voltage sources
Single voltage source
What theorem is usually used in the analysis of transistor circuit?
Superposition theorem
Millman�s theorem
Thevenin�s theorem
Norton�s theorem
A coil of inductance L has an inductive reactance of XLin an ac circuit in which the effective current is I. The coil is made from a superconducting material. The rate at which power is dissipated in the coil is
I2XL
IXL
IXL2
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 ratio of maximum value to the effective value of an alternating quantity is called
Form factor
Peak factor
Dynamic factor
Leakage factor
Electron flow assumes charges flow from
Negative to positive
Negative to negative
Positive to negative
Positive to positive
If resonant frequency is 10 kHz and quality factor is 50a then
Bandwidth is 200 Hz
XL= is 50a000
R is 50
XC= is 50a000
An impedance given by 90 -45� is a/an ___ impedance.
Inductive
Conductive
Resistive
Capacitive
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 does not affect resistance?
Resistivity
Cross-sectional area
Mass
Length
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
In a circuita an active element is one which
Supplies energy
Receives energy
Both supplies and receives energy
Amplifies signal
At parallel resonancea the currents flowing through L and C are
Infinite
Zero
Unequal
Equal
An inductive load always has a ___ power factor
Leading
Lagging
Zero
Unity
The ratio between the reactive power and the apparent power of an ac load is called
Quality factor
Power factor
Power ratio
Reactive power
Form its definitiona the unit of electric fielda is the N/C and equivalent unit of is the
V(m)2
V(m)
V/m2
V/m
Which of the following capacitors has the highest cost per F?
Plastic
Air
Mica
Electrolytic
VL= VCin a series RLCcircuit when
The value of the impedance is minimum
The power factor is zero
The current leads the total voltage by 90�
The total voltage is zero