Question
a.
0.40 and above
b.
0.22 to 0.40
c.
0.11 to 0.22
d.
0.08 to 0.11
Posted under DC Machines
Interact with the Community - Share Your Thoughts
Uncertain About the Answer? Seek Clarification Here.
Understand the Explanation? Include it Here.
Q. What is the range of the brush friction coefficients for medium category?
Similar Questions
Explore Relevant Multiple Choice Questions (MCQs)
Q. Specific resistance for a brush is given by _________
View solution
Q. How many poles to be used in DC machine if brushes are placed 4 commutator segments apart for 16 commutator segments?
View solution
Q. DC generators are disconnected/connected from/to the busbars only under the floating condition because ____________
View solution
Q. In PMDC motors we use magnetic material with ___________
View solution
Q. In PMDC magnetic material is placed instead of _____________
View solution
Q. PMDC motors are _________________
View solution
Q. PMDC motor offers ___________
View solution
Q. Which speed control method is employed in PMDC?
View solution
Q. What is the air gap flux density for PMDC motor?
View solution
Q. Which of the following is most favoured choice for PMDC motor?
View solution
Q. Speed-torque characteristic of PMDC motors is _______________
View solution
Q. PMDC produces high torque on ______________
View solution
Q. PMDC gives better speed regulation than DC shunt motor.
View solution
Q. If higher terminal voltage is applied to PMDC what will happen?
View solution
Recommended Subjects
Are you eager to expand your knowledge beyond DC Machines? We've handpicked a range of related categories that you might find intriguing.
Click on the categories below to discover a wealth of MCQs and enrich your understanding of various subjects. Happy exploring!
