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Why can we start a shunt motor under no load but why can't a series motor?
Wiki User
∙ 10y ago
The torque on a series motor is determined by the square of the armature current and, so, is very large -much larger than that of a shunt motor. Consequently, on starting, with no back-emf being generated, the torque on a series motor can be dangerously high if the machine has no mechanical load.
Wiki User
∙ 10y ago
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DifferEnces of long vs short shunt DC COMPOUND MOTORS?
the basic difference is ,in short shunt motor the series field winding wont carry any current under no load condition whereas in long shunt motors series winding will carry no load current.....
What will happen to a shunt motor if a shunt field coil opens while the motor is running under light load?
Motor will rotate at very high speed leading to destructionAnswer from Kinindia.com
Is shunt a bypass resistance?
It is the resistance across the cell to invoke a constant draw. This makes the cell work efficiently under ideal conditions. To do it properly new cell management systems measure the temp. and voltage output and put a load on the cell that makes it work best.
What type of motor used under the water?
It is submersible motor.
What is the theory for load test on dc compound generator?
Connect the circuit as per the circuit diagram shown in fig1. Keep the field regulator of the motor in the minimum resistance position and regulator of the generator in the maximum resistance position.2. Switch on the supply and start the motor with the help of its starter.3. Adjust the field regulator of the motor such that it runs its rated speed given on thename plate.4. Adjust the armature regulator of the generator to build up its rated voltage given on itsname plates on no load.5. Note down the no loads of ammeter and volt meter in tabular form.6. Increase the load gradually in steps and tabulate the readings7. Plot the external characteristics is load current Vs terminal voltage.8 Connect the generator for differentially compounding, repeat the process and plot theexternal characteristics.
DifferEnces of long vs short shunt DC COMPOUND MOTORS?
the basic difference is ,in short shunt motor the series field winding wont carry any current under no load condition whereas in long shunt motors series winding will carry no load current.....
Advantages of dc shunt motor?
it maintains a constant speed under varing load
Why is the speed of dc shunt motor practically constant under the normal condition?
The speed of dc shunt motor is practically constant under the normal condition because the field flux is constant.
What will happen to a shunt motor if a shunt field coil opens while the motor is running under light load?
Motor will rotate at very high speed leading to destructionAnswer from Kinindia.com
To replace 7.5 kw 400dc1750 rpm motor with an equivalent ac motor which produce eq. torque then what should be the rating of motor?
What kind of DC Motor? Different motors have different torque DC Motor Types * Permanent Magnet: No field coils at all. * Series Wound: the field coils are connected in series with the armature coil. Powerful and efficient at high speed, series wound motors generate the most torque for a given current. Speed varies wildly with load, and can run away under no-load conditions. * Shunt Wound: the field coils are connected in parallel with the armature coil. Shunt wound motors generate the least torque for a given current, but speed varies very little with load. Will not run away under no-load, but may if the field windings fail. * Compound Wound: a combination of series and shunt wound. This is an attempt to make a motor that will not run away under no load or if the field fails, yet is as efficient and powerful as a series wound motor. * Check this link: http://www.reliance.com/prodserv/motgen/b7096.htm
What is the difference between cumulative and differential connections of dc compound motor or generator?
in case of cumulative generator series field flux and main field flux are of same direction and in case of a differential compound generator series field flux and main field flux opposes each other.
Why speed of the dc shunt motor practically constant under normal load condition?
Because the field flux is constant.
Mercury outboard motor start and idles but stalls when you put in gear.?
outboard motor will start and idle, but dies out under load
How to change starter motor on GM 3.8 series 1 engine?
crawl under the car an remove it
How compound generator operates?
A compound generator is a type of generator that has both series and shunt field windings. The series winding adds to the main field flux, providing good starting torque and limiting voltage droop under load. The shunt winding ensures stable voltage regulation at normal load conditions by adjusting the generator terminal voltage. This combination of windings allows the generator to provide stable output voltage across a wide range of loads.
2000 s-10 wont start under 20 degrees what to do?
Use a 5W-20 grade motor oil.
Is shunt a bypass resistance?
It is the resistance across the cell to invoke a constant draw. This makes the cell work efficiently under ideal conditions. To do it properly new cell management systems measure the temp. and voltage output and put a load on the cell that makes it work best.
