1000+ Electrical Machines MCQ Questions and Answers Pdf - 1
Question: 1
Which of the following quantity maintains the same direction whether d.c. machine runs as a generator or as a motor?
(A) supply current
(B) field current
(C) induced emf
(D) armature current
Ans: B
field current
Question: 2
A single phase reluctance motor
(A) has salient pole structure and runs at synchronous speed
(B) has non salient pole rotor structure and runs at synchronous speed
(C) has salient pole rotor structure and runs at sub synchronous speed
(D) speed has salient pole rotor structure and runs at super synchronous
Ans: A
has salient pole structure and runs at synchronous speed
Question: 3
The slot edges in a DC machine are made of
(A) mild steel
(B) silicon steel
(C) fibre
(D) cast iron
Ans: D
cast iron
Question: 4
A hysteresis motor
(A) needs dc excitation
(B) cannot be run in reverse speed
(C) is not a self starting motor
(D) is a constant speed motor
Ans: D
is a constant speed motor
Question: 5
Potier reactance of an alternator is almost the same as
(A) armature leakage reactance
(B) total armature reactance
(C) field winding reactance
(D) leakage reactance of field winding
Ans: A
armature leakage reactance
1000+ GRE Non Verbal Reasoning Questions and Answers Pdf More
1000+ Non Verbal Reasoning Grouping of Images Questions Pdf More
Non Verbal Reasoning Grouping of Identical Figures Questions More
1000+ Transformation of Sentences Worksheet with Answers Pdf More
1000+ Ethiopian Bank Interview Questions and Answers Pdf More
UPSC IAS Exam Prelims 2020-2021 Hydro Electric Power Plants in India More
1000+ Puzzles Reasoning Questions and Answers More
1000+ Foundry Technology Objective Type Questions and Answers More
100+ Boats and Streams Questions and Answers for SSC Exams More
100+ Important Days in June for Bank Exams, SSC, UPSC, PSC More