Already have an account? Get multiple benefits of using own account!
Login in your account..!
Remember me
Don't have an account? Create your account in less than a minutes,
Forgot password? how can I recover my password now!
Enter right registered email to receive password!
Q. Derive the expression for generated emf in a dc generator.
Ans.
Expression for Generated emf in a DC Generator
We shall now derive an expression for the emf generated in a d.c. generator.
Let Φ = flux/pole in Wb
Z = total no. of armature conductors
P = no. of poles
A = no. of parallel paths = 2......for wave winding
= P....for lap winding
N = speed of armature in r.p.m.
Eg = e.m.f. of the generator = e.m.f./parallel path
Flux cut by one conductor in one revolution of the armature, dΦ = pΦ webers
Time taken to complete one revolution,
dt = 60/n sec.
e.m.f. generated/conductor dΦ/dt = PΦ/60/N = PΦN/60 volts
e.m.f. generator, Eg = e.m.f. per parallel path
= (e.m.f/conductor) × No. of conductor in series per parallel path
= PΦN/60 × Z/A
Eg = PΦZN/60A
A = Z...for wave winding
Explain Interrupts of 8085. a) Maskable interrupt b) Vectored interrupt c) Non maskable interrupt d) Hardware interrupt e) Software interrupt
Q MCM is the abbreviation for 1 kcmil. problem for a de?nition of cmil.) Data for commercial-base aluminum electrical conductors list a 60-Hz resistance of 0.0880 /km at 75°C for
what are the basic principles of shunt reactor and it''s operation system
Machine Language ( First Generation Language) As we have already discussed that all digital circuits can identify only two states which can be specified by 0 and i henc
An electroscope charged WITHOUT contacting a charged body is charged by: a) Induction b) Conduction c) Convection d) Insulation Ans: An electroscope char
Design a MOD-6 synchronous counter using T Flip-Flops.
Memory to Register This instruction is used to copy the contents of a memory locations whose address is specified by the HL register pair to any register. Before using th
Q. What do you understand by progressive control? Progressive Control: Step by step system is an example of progressive control. The connection is set up in stages, in response
components and uses.
What do you understand by PUBLIC assembler directive? The PUBLIC and EXTRN directives are very significant to modular programming. PUBLIC used to state that labels of
Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!
whatsapp: +91-977-207-8620
Phone: +91-977-207-8620
Email: [email protected]
All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd