ELECTRICAL MACHINE QUIZ

JavaScript isn't enabled in your browser, so this file can't be opened. Enable and reload.

ELECTRICAL MACHINE QUIZ_56

3-PHASE TRANSFORMER_7

Q.91 A transformers may built with a third winding is called

1 point

triple wound

3-winding

tertiary winding

any of the above

Clear selection

Q.92 what are the purposes of tertiary winding of transformers?

1 point

To supply the phase compensating devices

To supply the substation auxiliaries

To measure voltage of an HV testing transformers

all of the above

Clear selection

Q.93 The tertiary winding is also called

1 point

stabilizing winding

auxiliary winding

Third winding

all of the above

Clear selection

Q.94 The tertiary winding is normally ____

1 point

star connected

delta connected

open delta connected

delta-star connected

Clear selection

Q.95 Why tertiary winding is called stabilizing winding?

1 point

it employed to limit the short circuit current

it limit the over load current

it stabilized the under voltage

all of the above

Clear selection

Q.96 Why tertiary winding is called auxiliary winding?

1 point

it employed for supplying an additional small load at a low voltage

it employed for supplying an additional small load at a higher voltage

it employed for supplying an additional small load at a different voltage

it employed for supplying an additional small load at a same voltage

Clear selection

Q.97 Tertiary winding is connected in delta connected so that

1 point

short circuit current may be compensated by the circulating current flowing in the open delta

short circuit current may be compensated by the circulating current flowing in the closed delta

short circuit current may be compensated by the circulating current flowing in the high impedance winding

short circuit current may be compensated by the circulating current flowing in the tertiary winding

Clear selection

Q.98 In tertiary winding of transformer, the demagnetizing effect on primary will be determined by

1 point

arithmetic sum of the magnetizing forces of secondary and tertiary windings

simple addition of the magnetizing forces of secondary and tertiary windings

geometrical sum of the magnetizing forces of secondary and tertiary windings

algebraic sum of the magnetizing forces of secondary and tertiary windings

Clear selection

Q.99 The tertiary winding of 3-phase transformers

1 point

the primary windings acts as magnetizing windings

primary current produces the main magnetic flux

the flux links the secondary and tertiary windings

all of the above

Clear selection

Q.100 In 3-winding transformers there is a simultaneous transfer of electrical energy to

1 point

two secondary circuits

two primary circuits

one primary and one secondary

one primary and one tertiary circuits

Clear selection

Q.102 In 3-winding transformer the primary winding is designed for

1 point

higher load than the rated power of secondary windings

lower load than sum of the rated powers of the secondary and tertiary windings

higher load than sum of the rated powers of the secondary and tertiary windings

lower load than the rated powers of the tertiary winding

Clear selection

Q.103 A 3-windings transformer, three windings are operates at

1 point

same voltage level

secondary and tertiary are same voltage and primary is different

three different voltages

primary and secondary are same and tertiary is different voltages

Clear selection

Q.104 In 3-windings transformer the lv and Hv windings are kept near to each other in order to

1 point

increase leakage reactance between the pair of windings

reduce the leakage reactance between the pair of windings

reduce the insulation between the pair of windings

reduced the cost of winding

Clear selection

Q.105 Which of the following two windings arrangement is possible In 3-windings transformer?

1 point

lv, mv and hv

mv, lv and hv

mv, hv and lv

Both A and B

Clear selection

Submit

Clear form

Forms

This content is neither created nor endorsed by Google.