Related Questions

The e.m.f. generated by a shunt wound D.C. generator is E. Now while pole flux remains constant, if the speed of the generator is doubled, the e.m.f. generated will be
A $$\frac{{\text{E}}}{2}$$
B 2E
C Slightly less than E
D E
A separately excited generator as compared to a self-excited generator
A Is amenable to better voltage control
B Is more stable
C Has exciting current independent of load current
D Has all above features
Which of the following components of a D.C, generator plays vital role for providing direct current of a D.C. generator?
A Dummy coils
B Commutator
C Eye bolt
D Equalizer rings
The losses occurring in a D.C. generator are given below. Which loss is likely to have highest proportion at rated load of the generator?
A Hysteresis loss
B Field copper loss
C Armature copper loss
D Eddy current loss
A D.C. welding generator has
A Lap winding
B Wave moving
C Duplex winding
D Any of the above
A 4 pole generator with 16 coil has a 2-layer lap winding. The pole pitch is -
A 8
B 4
C 16
D 32
Which energy generated in a turbine is used to run electric power generator linked to the turbine shaft?
A mechanic energy
B kinetic energy
C potential energy
D elastic energy
The emf generated in a dc generator is directly proportional to
A Flux per pole
B No, of oples
C Spped of armature
D all above
Generator এর Spinning Reserve এর কাজ----
A কোন প্রতিকূল অবস্থায় Grid এর Stability ধরে রাখা
B চাহিদার সাথে সামঞ্জস্য রেখে বিদ্যুৎ উৎপাদন করা
C এই স্বল্প সময়ের জন্য Rated Capacity এর ১০% পর্যন্ত বিদ্যুৎ উৎপাদন করা
D Rated Capacity এর ৫০% পর্যন্ত বেশি বিদ্যুৎ উৎপাদন করার সক্ষমতা
The field coils of D.C. generator are usually made of
A Mica
B Copper
C Cast iron
D Carbon

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