Ask a Question

In PMDC motors we use magnetic material with ___________

← Prev Question Next Question →
+1 vote
146 views
in DC Machines by (506k points)
In PMDC motors we use magnetic material with ___________

(a) Low residual flux

(b) Low coercivity

(c) High residual flux

(d) All magnetic materials

The question was asked in a national level competition.

The doubt is from PMDC Motors topic in division DC Machines of DC Machines

1 Answer

+1 vote
by (1.2m points)
selected by
 
Best answer
Correct answer is (c) High residual flux

For explanation: In market magnetic materials with various properties are available, but for DC motor application we need magnetic materials with high residual flux in order to get high no load voltage. Along with residual flux, coercivity of material should be high.

Related questions

+1 vote
1 answer
PMDC motors are _________________
asked Oct 6, 2021 in DC Machines by aliva (506k points)
+1 vote
1 answer
PMDC motor offers ___________
asked Oct 6, 2021 in DC Machines by aliva (506k points)
+1 vote
1 answer
PMDC produces high torque on ______________
asked Oct 6, 2021 in DC Machines by aliva (506k points)
+1 vote
1 answer
What is the air gap flux density for PMDC motor?
asked Oct 6, 2021 in DC Machines by aliva (506k points)
+1 vote
1 answer
Which speed control method is employed in PMDC?
asked Oct 6, 2021 in DC Machines by aliva (506k points)
Welcome to TalkJarvis QnA, a question-answer community website for the people by the people. On TalkJarvis QnA you can ask your doubts, curiosity, questions and whatever going in your mind either related to studies or others. Experts and people from different fields will answer.

Most popular tags

biology – class 12 biology – class 11 construction & building materials chemistry – class 12 electronic devices & circuits network theory data structures & algorithms ii cell biology ic engine insurance finance money computational fluid dynamics engineering physics i discrete mathematics chemistry – class 11 aerodynamics casting-forming-welding i engineering mathematics operating system casting-forming-welding ii engineering drawing mysql engineering geology digital circuits wireless mobile energy management electrical measurements digital communications cyber security analytical instrumentation embedded systems electric drives cytogenetics advanced machining computer fundamentals life sciences basic civil engineering iot design of electrical machines physics – class 12 applied chemistry dairy engineering basic chemical engineering cloud computing microprocessor bioinformatics aircraft design aircraft maintenance software engineering drug biotechnology digital signal processing biochemistry data structures & algorithms i automotive engine design avionics engineering material & metallurgy energy engineering cognitive radio unix electrical machines biomedical instrumentation object oriented programming electromagnetic theory power electronics analog communications bioprocess engineering civil engineering drawing engineering metrology physics – class 11 mathematics – class 12 engineering chemistry i basic electrical engineering unit processes mongodb signals and systems cryptograph & network security hadoop mathematics – class 11 engineering physics ii html control systems engineering mechanics antennas analog circuits computer network java sql server javascript concrete technology chemical process calculation artificial intelligence design of steel structures c++ database management computer architecture engineering chemistry ii corrosion engineering chemical technology dc machines
Powered by TalkJarvis
...