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we can measure the resistance of the motor by using voltmeter ammeter method of by directly using a multimeter across the armature terminals of the motor
in voltmeter ammeter method we should use a less value of dc voltage to find the resistance
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∙ 14y ago
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How is the resistance of a motor winding expressed?
The resistance of a motor winding is expressed in
How do you calculate resistance box for slip ring motor?
how to calculate resistance box for slipring motors
How do you measure the earth resistance?
megger
How a slip ring motor work?
The stator coil is exactly the same as a 3 phase induction motor. The difference being the rotar which has 3 phase wiring in star point or delta connection and also has the sliprings connected to the wiring of the rotor. Brushes are use for the contact between the surpply and the rotor. By controling the current we can control the torgue and speed of the motor. This is done with resistance. Resistance can be greated by means of a resistance bank, liquid resistance or a variable resistance. The basic Idee is: The higher the resistance, low starting current, high torque, high % slip. Motor runs slowlyLow resistance , Higher starting current, lower torgue, lower % slip Motor runs faster.Thus by varing the rotor resistance the motor can be adapted for a spesific load.The motor Are mainly used for Overhead cranes, Elevators in buldings, Pumps under pressure and large fans
What type of test equipment would you use to check the resistance between motor winding?
Ideally megger test is the best test used to check the resistance of motor winding.
How is the resistance of a motor winding expressed?
The resistance of a motor winding is expressed in
What units do you measure resistance in?
Your measure resistance in OHMS ΩOhms.
Why does a motor boat slow to a stop when the motor dies?
Resistance. Water has a lot of resistance.
How do you calculate resistance box for slip ring motor?
how to calculate resistance box for slipring motors
The will measure resistance only?
The ohmmeter is usually used to measure the resistance of a given wire only.
How do you measure the unknown resistance?
Measure the voltage V and current I and compute the unknown Resistance R=V/I.
How do you measure the resistance in a parallel circuit?
You have to measure the voltage, and the current. The resistance is then calculated by using Ohm's Law.
Why does a motor have a bigger resistance than a bulb?
There is no particular reason why a motor should have a bigger resistance than a bulb. A motor's resistance must depend on what current it draws at the particular voltage it was designed to run on. Equally, a bulb's resistance must depend on what current it draws at the particular voltage it was designed to run on. A particular motor may have a higher resistance than one kind of bulb but that same motor may have a lower resistance than another kind of bulb.
Why meter bridge can't be used to measure low resistance and high resistance?
used to measure low Resistance since it must reach a null.
What is the ohm unit used to measure?
Ohms measure electrical resistance. The resistance in ohms is the voltage divided by the current.
What device is used to measure the resistance of a resistor?
You can use a multi-meter to measure resistance. The specific portion of the meter for measuring resistance is called an ohmmeter.
What is resistance of stator winding of induction motor?
Resistance of stator winding is the resistance of the copper conductors being used for building the windings of three separate phases, i.e. R-Y-B. These windings are marked like U1-U2, V1-V2 & W1-W2 at the motor terminals (6 nos.) for the three phases, i.e. R-Y-B respectively. We have simply to measure the resistance of each winding by using a multimeter by connecting the terminals (2 no.) to U1 & U2 and so on. The resistance should be in ohms not milliamps [amps is form of measuring current not resistance] milliamps to microamps in case of large motors, it may be in amps in case of small sized motors. But resistance of each winding should be nearly same to each other. This shows the electrical balance among windings & also proves the healthiness of the winding.
