Computer Programming MCQs — Test 20
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Question 1
In a D.C. generator in order to reduce sparking at brushes, the self-induced e.m.f. in the coil is neutralised by all of the following except______________?
Question 2
In D.C. generators on no-load, the air gap flux distribution in space is______________?
Question 3
The purpose of providing dummy coils in a generator is____________?
Question 4
A shunt generator running at 1000 r.p.m. has generated e.m.f. as 200 V. If the speed increases to 1200 r.p.m., the generated e.m.f. will be nearly_______________?
Question 5
The purpose of providing dummy coils in a generator is__________________?
Question 6
Which generator would you prefer for feeding long D.C. transmission lines ?
Question 7
In a D.C. generator the critical resistance can be increased by_____________?
Question 8
The number of armature parallel paths in a two-pole D.C. generator having duplex lap winding is______________?
Question 9
For both lap and wave windings, there are as many commutator bars as the number of_____________?
Question 10
The series field of a short-shunt D.C. generator is excited by_______________?