How many degrees of phase represents one full cycle?
Correct Answer :
A.
Related Questions
What value of R is needed with a 0.05 F Cfor an RCtime constant of 0.02 s?
400 M
400 G
400 k
Which of the following dielectric materials makes the lowest-capacitance capacitor?
Paper
Mica
Air
Electrolyte
An inductor carries 2 A dc. If its inductance is 100 Ha then what is its inductive reactance?
Zero
1.3 k
Which of the following does not refer to electrical energy?
Volt-ampere
Joule
Watt-second
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In a rectangular wavea the peak factor is
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Uniformly all over
When capacitors are connected in parallela the total capacitance is
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Smaller than the smallest capacitor
Greater than the smallest capacitor
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Glass
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In an RL series circuita
Current lags voltage by less than 90�
Current lags voltage by 180�
Current lags voltage by 90�
Current leads voltage by 90�
What is the resonant frequency of a circuit when L of 3 microhenrys and C of 40 picofarads are in series?
14.5 kHz
145 MHz
14.5 MHz
145 kHz
A capacitor is basically constructed of
Two conductors separated by a dielectric
Two dielectric separated by a conductor
Conductors and dielectric
Conductors and semiconductors
What does a capacitor store?
Voltage
Charge
Current
Power
Which of the following capacitors is suitable for dc filter circuits?
Mica
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If an emf in circuit A produces a current in circuit Ba then the same emf in circuit Bproduces the same current in circuit ? this theorem is known as
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Millman�s theorem
Reciprocity theorem
Norton�s theorem
A real current source has
Infinite internal resistance
Zero internal resistance
Large internal resistance
Small internal resistance
What is a rotating vector whose projection can represent either current or voltage in an ac circuit?
Polar diagram
Scalar quantity
Velocity
Phasor
What is the purpose of a load in an electric circuit?
To increase the circuit current
To decrease the circuit current
To utilize electrical energy
To make the circuit complete
How many degrees of phase represents one full cycle?
What is the total capacitance of 10 capacitorsa each of 20 F in series?
200 F
2 F
100 F
0.5 F
Rationalizing the denominator of a complex number means
Eliminating the j component in the denominator
Adding j component in the denominator
Eliminating the j component in the numerator
Adding j component in the numerator
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
For multi-plate capacitora capacitance is proportional to
Number of plates less one(n ± 1)
Number of plates plus one(n + 1)
Number of plates less two(n - 2)
Number of plates (n)
What is the rms value of a square wave?
Equals its peak value
Equals its peak-to-peak value
Peak divided by square root of two
Peak divided by pi
The temperature-resistance coefficient of pure gold is
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Imaginary
Real
Conjugate
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The voltage cannot be exactly in phase with the current in a circuit that contains
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Inductance and capacitance
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In a resonant circuita if Q ? 10 resonant frequency _______ bandwidth.
Bisects
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Is less than
Is equal to
Resistor with colored bands in the body
Wire-wound resistor
Carbon-composition resistor
Potentiometer
Rheostat
Parallel resonant circuit is sometimes called as
Acceptor circuit
Rejector circuit
Inductive circuit
Capacitive circuit
Electron flow assumes charges flow from
Negative to positive
Negative to negative
Positive to negative
Positive to positive