All the rules and laws of D.C. circuit also apply to A.C. circuit containing
Select an option to see the answer and solution.
Electrical Engineering · all questionsA.C Fundamentals, Circuits And Circuit Theory
A.C Fundamentals, Circuits And Circuit Theory
practice.
Practice every MCQ with options. Use Show answers when you want the correct option and solution.
109
Questions
2/6
Page
Pick an option on a question to see the right answer and solution.
The equation of 50 Hz current sine wave having r.m.s. value of 60 A is
Select an option to see the answer and solution.
In a pure inductive circuit if the supply frequency is reduced to the current will
Select an option to see the answer and solution.
In a pure capacitive circuit if the supply frequency is reduced to the current will
Select an option to see the answer and solution.
A sine wave has a frequency of 50 Hz. Its angular frequency is __________ radian/second.
Select an option to see the answer and solution.
Skin effect occurs when a conductor carries current at _________ frequencies.
Select an option to see the answer and solution.
In a parallel R-C circuit, the current always _________the applied voltage
Select an option to see the answer and solution.
A pure capacitor connected across an A.C. voltage consumed 50 W. This is due to
Select an option to see the answer and solution.
Time constant of a capacitive circuit
Select an option to see the answer and solution.
Capacitive reactance is more when
Select an option to see the answer and solution.
The phase difference between voltage and current wave through a circuit element is given as 30°. The essential condition is that
Select an option to see the answer and solution.
A heater is rated as 230 V, 10 kW, A.C. The value 230 V refers to
Select an option to see the answer and solution.
In the case of an unsymmetrical alternating current the average value must always be taken over
Select an option to see the answer and solution.
Time constant of an inductive circuit
Select an option to see the answer and solution.
Capacitive susceptance is a measure of
Select an option to see the answer and solution.
The double energy transient occur in the
Select an option to see the answer and solution.
A phasor is
Select an option to see the answer and solution.
At __________ frequencies the parallel R-L circuit behaves as purely resistive.
Select an option to see the answer and solution.
In AC. circuits, laminated iron is invariably used in order to
Select an option to see the answer and solution.
The power factor of a D.C. circuit is always
Select an option to see the answer and solution.