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Select the option that is correct regarding the following two statements labelled Assertion (A) and Reason (R).

Assertion (A): Three-phase auto-transformers are smaller and lighter than equivalent three-phase two-winding transformers.

Reason (R): Auto-transformers use fewer windings and a smaller core.

Which statement about magnetic flux is false?

Anderson’s bridge belongs to which category of measuring circuits?

Which combination of the following statements about direct resistance heating are correct?

i) The process requires the charge to be electrically conductive.

ii) Electrodes are placed in direct contact with the charge.

iii) Heat is generated by induced eddy currents in the charge.

iv) The charge does not form part of the electric circuit.

Determine whether x(t)=sin(3t) + sin(5t) is periodic. If yes, find its fundamental period.

In the given circuit R₁= 6Ω, R₂= 4Ω and R₃= 3Ω. The voltage sources are V₁ = 21V and V₂ = 5V. Determine the currents flowing through R₁ and R₂, respectively.

What is the main objective of backup protection in a power system?

The Thevenin equivalent voltage at terminals a-b is _________________.

Which type of magnetic material loses its magnetism immediately after the removal of the magnetic field?

Why does a squirrel cage induction motor not develop maximum starting torque?