Basic Concept of Electricity MCQs
Practice free Basic Concept of Electricity multiple-choice questions with instant answer feedback and step-by-step solutions. Click an option to check yourself, reveal the full explanation, and work through all 171 questions — no login required.
Question 100easy
The direction of dynamically induced emf in a conductor can be determined by
Question 101easy
There is a constant homogeneous magnetic field pointing in a vertical direction. A metallic wire in the form of a square is rotated about a horizontal axis passing through the middle points of its opposite arms. The emf generated in the square is
Advertisement
Question 103easy
The property of a coil by which a counter emf is induced in it, when the current through the coil changes, is known as
Question 104easy
The mutual inductance between two closely coupled coils is 1 H. Now the turns of one coil are decreased to half and those of the other are doubled. The new value of mutual inductance would be
Question 105easy
When two coils having self inductances of L1 and L2 are coupled through a Q mutual inductance M, the coefficient of coupling, K is given by Fig. 1.13
Advertisement
Question 106easy
The overall inductance of two coils connected in series, with mutual inductance aiding self inductance is L1 with mutual inductance opposing self-inductance the overall inductance is L2. The mutual inductance M is given by
Question 107easy
The coils having self inductance of 10 mH and 15 mH and effective inductance of 40 mH, when connected in series aiding. What will be the equivalent inductance if we connect them in series opposing?
Question 108easy
The coupling between two magnetically coupled coils is said to be ideal if the coefficient of coupling is