No load
Part load
machines is conducted at A. No load B. Part load C. Full load
Overload
Answer is Wrong!
Answer is Right!
Hopkinson’s test on D.C. machines is conducted at full load.
In Hopkinson’s test, two identical D.C. machines are connected in tandem, with the driving machine driving the driven machine. The driving machine is loaded to its full load, and the driven machine is unloaded. The current and voltage in each machine are measured, and the efficiency of the driving machine is calculated.
The test is conducted at full load to ensure that the machines are operating under realistic conditions. The results of the test can be used to compare the efficiency of different machines, and to design machines that are more efficient.
The following are the possible answers to the question:
- A. No load: This is not the correct answer because Hopkinson’s test is not conducted at no load. The test is conducted at full load to ensure that the machines are operating under realistic conditions.
- B. Part load: This is not the correct answer because Hopkinson’s test is not conducted at part load. The test is conducted at full load to ensure that the machines are operating under realistic conditions.
- C. Full load: This is the correct answer because Hopkinson’s test is conducted at full load to ensure that the machines are operating under realistic conditions.
- D. Overload: This is not the correct answer because Hopkinson’s test is not conducted at overload. The test is conducted at full load to ensure that the machines are operating under realistic conditions.