MCQ'S FOR ECET

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MCQ'S FOR ECET

The electrostatic potential at a point inside a solid conductor is *

1 point

Zero

Same as that of surface

Equal and opposite to the surface

Depends upon the conductivity

In a transformer core having a circular cross-section, if its linear dimensions are doubled, it permeance will be *

1 point

Same

\sqrt{2} times

4-times

Doubled

An electric dipole is submerged into the water, the force between charges *

1 point

Same

Increased significantly

Reduced significantly

Can’t be predicted

Two coils are connected in series having self inductances as L_{1} \& L_{2} while the mutual inductance is M. If the number of turns in both the coils is doubled, the equivalent inductance will be *

1 point

Four times

Doubled

Halved

16-times

The magnetic material suitable for high-frequency application is *

1 point

Ferromagnetic

Ferrites

Hard Magnetic Material

Soft Magnetic Material

Right hand palm-rule is used to find _______________. *

1 point

Direction of magnetic field by current carrying conductor

Force on current carrying conductor in the magnetic field

Magnetic field by coil

None of these

The unit of Reluctance is *

1 point

Henry–1

Metre/Henry

Ampare/meter- Henry

{m^2} /Henry

Which one of the following is applicable in the non-linear network also *

1 point

KVL

KCL

Thevenin’s Theorem

Both (a) and (b)

If the two bulbs of and rating of 100 W, 200V are connected in series, across rated voltage their equivalent rating will be *

1 point

200 W

50 W

100 W

75 W

A series RLC circuit resonates at 4 Hz, it provides 0.707 lag pf at 8 Hz. The frequency at which it gives 0.707 lead pf, is *

1 point

0.5 Hz

16 Hz

32 Hz

2 Hz

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