Which of the following coil will have large resonant frequency?
A. A coil with large resistance
B. A coil with low resistance
C. A coil with large distributed capacitance
D. A coil with low distributed capacitance
Answer: Option C
This Question Belongs to Electrical Engineering >> A.C Fundamentals, Circuits And Circuit Theory
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Comments ( 11 )
Which of the following refers to a parallel circuit?
A. The current through each element is same
B. The voltage across element is in proportion to it's resistance value
C. The equivalent resistance is greater than any one of the resistors
D. The current through any one element is less than the source current
A. Apparent power is more than actual power
B. Reactive power is more than apparent power
C. Actual power is more than reactive power
D. Reactive power is more than actual power
The transient currents are associated with the
A. Changes in the stored energy in the inductors and capacitors
B. Impedance of the circuit
C. Applied voltage to the circuit
D. Resistance of the circuit
The inductance of a coil can be increased by
A. Increasing core length
B. Decreasing the number of turns
C. Decreasing the diameter of the former
D. Choosing core material having high relative permeability
The coorect answer should be D option because of our resonant frequency is inversly praportional to the capacitor.
Resonant frequency of coil is inversely proportional to square root of values of capacitance and inductance. So option D is correct
Resonant frequency of coil is inversely proportional to square root of values of capacitance and inductance. So option D is correct
Resonant frequency of coil is inversely proportional to square root of values of capacitance and inductance. So option D is correct
Resonant frequency of coil is inversely proportional to square root of values of capacitance and inductance. So option D is correct
Resonant frequency of coil is inversely proportional to square root of values of capacitance and inductance. So option D is correct
I think answer d is right, because resonant frequency f is inversely propositional to c
I think it should be D. Because
w = 1/√LC. C should be low than resonant frequency will be high.
It is the highest frequency for which the coil is inductive. Capacitance approaches to zero, while frequency approaches to infinity. As C is inversely proportional to f.
What is the reason behind it???
Please give me the details ans