what happen when dc shunt motor field is sudden open in
running condition
Answer Posted / tommy
When field ckt is opened field current will be zero,flux
will be zero,as speed is inversly proportional to speed
becoz of zero flux motor tries to rotate at maximum
(infinite),dangerous speed .motor will be damaged(un rooted
etc..)
| Is This Answer Correct ? | 18 Yes | 1 No |
Post New Answer View All Answers
why we use 630mm single core cable for transformer secondary side and why two neutral cable
HOW TO CALCULATE THE VT SIZING?
i have completed deee and i've (June2012-feb 2015 experience in electrical maintenance in pvt ltd company.company having HT & LT electrical power.how to apply electrical C-license ,NOW I was resigned my job,what are requirements of applying for c-license
what is class of SPD and dittels of all class ?
Difference between Lugs and Thimbles
Define rise time.
What is a differential amplifier?
i completed my DEEE. and i want to electrical c license. how to get it..?
To make a basic instrumentation amplifier, it takes A One op-amp with a certain feedback arrangement B Two op-amp and seven resistors C Three op-amps and seven capacitors D Three op-amps and seven resistors
What is reverse power relay?
An ELHNC 80amp 240v 30mA RCD is tripping periodically, every 30 - 180 seconds is it safe to disconnect the protection circuit?
what is mean by NPS (Negative phase sequence)fault? what is the difference between EFR & OCR faults?
how to find impedance , mutual indatnce in transmission lines
Why mostly the HV side of transformer has Delta?
Dear all: Recently we got a question about Interface between PMS and SAP-PM.once we got a update message from PMS.we should set the deletional flag for functional location in SAP system.Is there any FM or BAPI to use?There are only functional location create and change provided by SAP. Best regards!