BEE MCQ TEST ELECTRICAL UNIT 2

For a transformer the frequency of secondary voltage is___ that of the primary voltage.

• Higher than

• Lower than

A transformer operates on the principle of___

• Static Electromagnetic Induction

• Fleming's Law of electromagnetic induction

Answer explanation

The material used for the construction of the transformer core is ___.

• Silicon Steel

• Reen Forced Steel

The ___ in a transformer acts as an insulator as well as coolant.

• Oil

• Wire Insulations

The cylindrical windings are used for ___ transformer.

• Berry

• Core

For the ___ type transformer the primary and secondary windings are placed on the central limb of the core.

• Core

• Shell

The ___ type of transformer provides double magnetic circuit.

• Shell

• Berry

If the primary voltage is 230 V, 50 Hz, N₁ = 500 and Bₘ = 0.4144 T then the cross-sectional area of the core is ___.

• 50 meter square

• 50 centimeter square

The voltage ratio of a transformer is defined as the ratio of ___.

• V_2, V₁

• V_1,V₂

The ratio N₂/N₁ of a transformer is called as ___ ratio.

• Reverse turns

• Turns