How can the current that a direct current motor will consume at start-up be determined?

Q: What happens to a series connected direct current motor if its field winding opens at full load?

A: DC Series motor :- In DC series motor, there are two windings, "armature winding & series…

Q: What is the function of starter for medium and large size Induction Motors?

A: The motor not turns instantly when supply connected across because it provide a very small impedance…

Q: Why not self starting induction motor?

A: Induction motor- An induction motor is an electric motor that works on the method of electromagnetic…

Q: Why it is not possible to start the d. C. series motor without load ?

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Q: What will happen if we run the motor at nominal load without starting? Please observe and explain…

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Q: 3- Why is the starting torque of the series motor high?

A: In series motor torque is directly proportional to the square of armature current. The detailed…

Q: A 20 HP 208 volts, 1750 rpm, 3-phase 60 Hz induction motor draws 5.5 times the full load current and…

A: Given that  Pout=20 HPVL-L=208 VN=1750 rpmIst=5.5Iflτst=1.6τfl For induction motor…

Q: Name three characteristics that make the synchronous motor different from an induction motor?

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Q: What are some ways to test the strength of a vibration motor?

A: Vibration Motor- Vibration motors are those motors in which the unbalance condition is intentionally…

Q: what is dc shunt and series motor?

A: Motor is an electrical machine which converts the electrical energy into mechanical energy. DC motor…

Q: Draw the circuit diagram for the squirrel cage motor and name all the components too.

A: The circuit diagram for the squirrel cage induction motor:

Q: 7. Why DC motors are not operated to develop maximum power in practice?

A: Electrical machines can be either generators or motors. The machines can be classified on the basis…

Q: A 500-Volt shunt motor running at 720 rpm takes an armature current of 50A. The effective armature…

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Q: If the starter resistance is 1.9 ohms, what current does the motor take at the instant of starting…

A: At starting back emf is zero. So armature current at starting =( terminal voltage- brush voltage…

Q: Draw the schematic diagram of magnetic starter showing the power and control circuit of a shunt dc…

A: Magnetic starter  - A magnetic starter is an electromagnetically controlled switch. the magnetic…

Q: How can you determine the current that a direct current motor will draw at start-up

A: Above question is based on DC motor, the major classification of DC motor are Series motor Shunt…

Q: Electric drive motors are usually running at high speed commonly at 1,800 rpm, 3,600 rpm or more.…

A: Motor is define as a device which convert electric power to the mechanical energy. For drive motor…

Q: Why is a starting resistor used in DC motor circuits?

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Q: (Im) Does the excitation circuit current change as the motor current changes? explain the reasons.…

A: The excitation current does not change as the current motor changes because, in the shunt DC motor,…

Q: Explain with mathematical reasons why direct current motors cannot be operated from a constant…

A: The voltage of the dc motor is as follows:   V=I.R+Ldidt+E   =I.R+EE=ke.ωso, V=I.R+ke.ωke=Electrical…

Q: Your Answers may be presented through Discussions, Drawings/Figures/Diagrams, Reference to NEC/PEC…

A: The solution is given below

Q: Q3/ Why is a starting resistor used in de motor circuits?

A: The back e.m.f of the DC motor is Eb = ΦZN60XPA     Where Φ is flux/pole                 Z is total…

Q: The total armature current carried by a 50-hp four-pole 230-volt motor is 180 amp. If the winding is…

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Q: How universal motor can be run on AC and DC supply ?what are the material used in the universal…

A: A universal motor is a series-wound motor — meaning that the field and armature windings are…

Q: When a series dc motor is operated without a load, which of the following conditions occurs? The…

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Q: Does the excitation circuit current change as the D.C shunt motor current changes? explain the…

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Q: A 250 V, 37 KW, dc shunt motor has to expert a maximum torque of 150% of full load torque during the…

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Q: What are the methods for Starting Torque of a Squirrel-cage Motor, Explain one?

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Q: Why is the starting torque of the series motor high?

A: The explanation is as follows.

Q: If a 208V, 10-hp, four-pole, 60HZ, Y-connected induction motor with a full-lo ad slip of 5 percent…

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Q: Why the dc shunt motor running at the infinity speed?

A: In this question , we will write about how dc shunt motor running at infinite speed..

Q: in DC shunt motor if the supply voltages 400 volt armature resistance 0.5 ohm and armature current…

A: In the question, A DC shunt motor the supply voltages V=400 volt armature resistance Ra= 0.5 ohm…

Q: Explain the differences between the stepper motor, servo motor and DC motor? Explain their…

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Q: What do you understand by multi quadrant operation in an Electric drive? What are the advantages of…

A: Types of quadrant operation in Electric Drive Forward Motoring Reverse Motoring Forward Braking…

Q: a) Starting torque b) Slip at maximum torque c) Maximum torque d) Speed at maximum torque e) In…

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Q: Where is the best place to look to find specific information about a motor, such as horsepower,…

A: The explanation is as follows.

Q: 1- What will happen if the armature current of DC motor is turned on when a = 90°?

A: Single-Phase Half-Wave Converter Drives Fig.13.1 shows a single-phase half-wave converter drive used…

Q: 5. How does the saturation in the machine affect the speed of shunt motor?

A: We can find that how the saturation in the machine affect the speed of the shunt motor by the speed…

Q: What is the purpose of the split-ring commutator in an electric motor that operates on DC power?

A: The electric device that uses electrical power input and the rotor stator set, to convert the…

Q: Explain why pole changing method of speed control cannot be used for slip ring induction motor?

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Q: Why, for a given induction motor, might it be possible to employ direct-on-line starting in one…

A: In this question we will write why different starting methods are employed for induction motor.....

Q: When a series dc motor is operated without a load, which of the following conditions occurs? * O The…

A: It is known that for DC series motor load decides the amount of armature current .when load of motor…

Single Phase Induction Motor

The single-phase induction motor or engine consists of a single rotating phase in the stator and a rotating cage in the rotor. When phase one supply is connected to the stator winding, a magnetic field is generated. In the pulsating field, the rotor does not rotate due to inertia. So, a single-phase import motor does not start and requires some initial methods.