Auto transformer rating is chosen so as to have best performance when – McqOptions

MCQOPTIONS

1.	Auto transformer rating is chosen so as to have best performance when the analogous two winding transformer has ___________
A.	two voltage levels fairly close to each other
B.	very high transformation ratio
C.	any voltage levels
D.	step down purpose
Answer» B. very high transformation ratio

Discussion

No Comment Found

Related MCQs

In the lab, two students X and Y conducted the experiments to verify the name plate ratings of the transformer.But student X conducted the same at higher frequency. The kVA reading of student X will be ___________
Auto transformer rating is chosen so as to have best performance when the analogous two winding transformer has ___________
A 200V, 10 hp, 4 poles, 60 Hz, Y-connected induction motor had full load slip of 5%. Then the rotor speed of the motor with respect to stator is?
For a separately excited dc machine of 25 kW, 250 V and armature resistance of 0.25 ohms, is running at 3000 rpm with supply of 255 V. The electromagnetic power produced at the armature in kilo watts is?
A 3-phase, five limbed shell type transformer, star connected, 200V, 50 Hz, 100 kVA will have ___________
While conducting lab experiments on DC machine loading, the students are given a machine with its rating as 100 kW maximum rating. Then the _____________
The desired voltage regulation for a single phase, 50 Hz transformer is zero. Its pu ohmic drop is 4% and pu reactive drop is 4%. The required power factor angle for the operation in degrees is?
If the dimension of a single phase transformer is made sqrt(3) times less than the original structure, then what is new no load current rating of the transformer?