Q. Why field test is conducted even if Hopkinson’s test is present?

View solution

Q. Hopkinson’s test is suitable for ______________

View solution

Q. Hopkinson’s test gives _______________

View solution

Q. For carrying out load test on Hopkinson’s test setup _________________

View solution

Q. Hopkinson’s test is a regenerative test.

View solution

Q. What will happen if field current of motor in Hopkinson’s test is decreased?

View solution

Q. What will happen if field current of generator in Hopkinson’s test is increased?

View solution

Q. In Hopkinson’s test, two machines are connected in ______________

View solution

Q. Hopkinson’s test requires ____________

View solution

Q. Hopkinson’s test of D.C. machines is conducted at _______________

View solution

Q. Retardation curve is ______________

View solution

Q. In retardation test _____________

View solution

Q. While carrying out retardation test, if t is equal to time constant then _____________

View solution

Q. Which of the following is not a disadvantage of a Swinburne’s test?

View solution

Q. Efficiency calculated by Swinburne’s test is _____________

View solution

Q. What is the purpose of performing retardation test after Swinburne’s test?

View solution

Q. In order to run motor on rated speed while carrying out Swinburne’s test we add ______________

View solution

Q. While carrying out Swinburne’s test at rated armature voltage motor will run at ____________

View solution

Q. Which losses can be identified from Swinburne’s test?

View solution

Q. Which of the following test will be suitable for testing two similar DC series motors of large capacity?

View solution