If transformer then it refers to that, the primary is charged, but secondary is open, (no load is connected) If motor, it refers to that no load is connected to motor, the shaft is decoupled from the load, but running with out any load.
Detailed Solution. For a constant back emf, flux is inversely proportional to the speed of the motor. If field winding is disconnected accidentally, the speed would dangerously increase in order to maintain the back emf of the motor
A bench and no load! Whatever you are testing has no load. It might be a generator or a motor for example. If a motor it wouldn't be connected to anything. If a generator it would have nothing plugged in.
In case of grounded load load is grounded and voltage is measured across it. while in case of floating load load is not grounded instead it is connected in feedback circuit.
Multimetres are generaly used to measure the following quantities. Voltage: multimeter is connected in parallel with the Load; Current: multimeter is connected in series with Load; Resistance: the resistor must be taken out of the circuit first, then, the probes from the multimeter are connected across the resistor,
If transformer then it refers to that, the primary is charged, but secondary is open, (no load is connected) If motor, it refers to that no load is connected to motor, the shaft is decoupled from the load, but running with out any load.
Generally a motor drives some equipment, it could be a fan, or a pump, connected to motor's shaft. The speed of the motor when no equipment is connected to its shaft is known as no load speed.
DC Series motor should never run without load connected to it because starting torque for DC series motor is infinite and running it on no load will damage the motor due to overspeeding.
Load resistors are connected across the circuit to limit the current flowing through the load.
Detailed Solution. For a constant back emf, flux is inversely proportional to the speed of the motor. If field winding is disconnected accidentally, the speed would dangerously increase in order to maintain the back emf of the motor
Across the line starting of a motor can be as high as 300% of the full load amps.
A bench and no load! Whatever you are testing has no load. It might be a generator or a motor for example. If a motor it wouldn't be connected to anything. If a generator it would have nothing plugged in.
A bench and no load! Whatever you are testing has no load. It might be a generator or a motor for example. If a motor it wouldn't be connected to anything. If a generator it would have nothing plugged in.
In case of grounded load load is grounded and voltage is measured across it. while in case of floating load load is not grounded instead it is connected in feedback circuit.
In star, a motor is connected with 415V across 2 phases, which means Line voltage is 240V (415 / 1.7ish) In delta theres 415 across each phase, therefore I = much higher according to Ohms law (I = V/R) Hypothetically; load of 24ohms connected on the motor In star; I = 240 / 24 = 10A In delta I = 415 / 24 = 17.2A Hope this helps a little
Multimetres are generaly used to measure the following quantities. Voltage: multimeter is connected in parallel with the Load; Current: multimeter is connected in series with Load; Resistance: the resistor must be taken out of the circuit first, then, the probes from the multimeter are connected across the resistor,
after incomer & before outgoing feeder, we connect ameter to measure amps.AnswerThe voltmeter is connected in parallel with the load and the ammeter is connected in series with the load, if you wish to measure the potential difference across, and the current through, that load.