If three-phase transformation is needed and a three-phase transformer of the proper size and turns ratio is not available, three single-phase transformers can be connected to form a _____.
A. three-phase bank
B. wye-delta bank
C. wye bank
D. delta bank
Answer: A
You might also like to view...
Discuss why indexes are good only for comparing animals within their own groups.
What will be an ideal response?
Which of the following is a (are) greenhouse gas(es) contributed to the atmosphere by soils?
A) carbon dioxide B) methane C) nitrous oxides D) all of the above E) none of the above
Even the most efficient torque converter has a slippage rate of _______
A) 10% to 15% B) 0% to 2% C) 8% to 12% D) 3% to 6%
Write the differential equations for the systems in Figure E-64, find their impulse responses and determine whether or not they are BIBO stable. For each system and . Then comment on the effect on system BIBO stability of redefining the response.
The eigenvalues are -0.653 and +0.153. We already know the system is BIBO unstable because one of the eigenvalues has a positive real part.