Question is ⇒ The purpose of retardation test on D.C. shunt machines is to find out, Options are ⇒ (A) stray losses, (B) eddy current losses, (C) field copper losses, (D) windage losses, (E) , Leave your comments or Download question paper.

Question is ⇒ The purpose of retardation test on D.C. shunt machines is to find out, Options are ⇒ (A) stray losses, (B) eddy current losses, (C) field copper losses, (D) windage losses, (E) , Leave your comments or Download question paper. Previous question Next question


Q1.	The purpose of retardation test on D.C. shunt machines is to find out
A.	stray losses [Correct Answer]
B.	eddy current losses [Wrong Answer]
C.	field copper losses [Wrong Answer]
D.	windage losses [Wrong Answer]
View Answer 7 -4 Explanation:- Answer : A Discuss it below : Sunil saini Said on 2019-11-16 21:55:31 Keeping pole flux constant, if the speed of a DC generator is doubled, then it's generated emf !! OOPS Login [Click here] is required to post your answer/result Help other students, write article, leave your comments

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⇒ Which loss in a D.C. generator varies with load ?
Copper loss
Eddy current loss
Hysteresis loss
Windage loss

⇒ During rheostatic braking the braking torque is proportional to
speed
(speed)²
(speed)^-1
(speed)^-2

⇒ Which of the following loss in a D.C. generator varies significantly with the load current ?
Field copper loss
Windage loss
Armature copper loss
None of the above

⇒ If the terminals of armature of D.C. motor are interchanged, this action will offer following kind of braking
regenerative
plugging
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⇒ If Ia be the armature current, then speed of a D.C. shunt motor is
independent of la
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D.C. series motors
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⇒ Which of the following methods is most effective in finding out the no load losses in a large D.C. shunt motor ?
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