Explain, in details, why it is necessary to use starting resistance?

Q: What is a disadvantage of starting with autotransformer coils rather than with resistors?

A: The disadvantage of using a resistor is it reduces the power factor

Q: A 200V long-shunt generator delivers 100A, has an armature resistance of 0.05Ω, a series field…

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Q: a) What is the operating principle of induction motor? b) Differentiate between induction motor and…

A: Induction motor works on the principle of Faraday's law of Electromagnetic Induction. Operating…

Q: 1. In the lab you will be measuring the quantities: source voltage, field current, armature current,…

A: Currents are induced in the rotor's windings by the revolving magnetic flux, similar to currents…

Q: Identify the implications of the limits of the Bethe's Stopping Power Formula

A: Stabilization means the loss of some energy in highly charged particles in the environment, and the…

Q: Explain 2 types of DC motors in terms of giving electric current to the rotor?

A: The solution is provided in the following section.

Q: Q/ What is meant by Armature reaction? Explain and Draw?

A: Armature reaction:  It simply depicts the armature field's impact on the main field. The armature…

Q: Describe the responses of the armature and field currents, speed, and torque during starting.…

A: The graph that are showne here represent the characteristics of a dc series motor  It can be…

Q: your own words describe a common starting method that can be used to start induction motors. Your…

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Q: a. it is the force exerted by the motor to perform a task b. it is a type of motor which is…

A: A motor is a device used for converting electrical to mechanical energy, they are three types of…

Q: Briefly discuss the operation of an autotransformer starter for three-phase induction motors with…

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Q: Would a universal motor be a good choice for a clock? For a furnace fan motor? For a home coffee…

A: Universal motor is not a good choice for a clock, because the torque demanded by the clock is not…

Q: A 250 V DC long-shunt, compound motor takes a current of 82 A at full load. Calculate the motor…

A: There are two types of compound motor.in commulative compound motor, shunt field add the series…

Q: The armature resistance of a 30-kW, 440-V shuntgenerator is 0.1Ω . Its shunt field resistance is…

A: Calculating armature current Ia=Ish+IloadIa=440200+30×104440Ia=2.2+68.18=70.3818 Calculating EMF…

Q: Explain the Brush less excitation System ,With proper figure?

A: Brush-less Excitation System (BES) is a method of supplying field current to the Synchronous…

Q: A DC shunt generator has avoltage on open circuit of 150V. When machine is on load, the terminal…

A: DC machines (Generator/ Motor) are the important parts of electrical drives. These machines are used…

Q: a) Explain electric drive. Draw the block diagram and explain the roles of its components.

A: Electric drive : An electric drive is a circuit which is used for controlling purpose it is used to…

Q: A shunt generator delivers full-load current of 200A at 240V, the shunt field resistance 60Ω and…

A: Given: I=200 AV=240 VRf=60 Ωnfl=90 %

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

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Q: 3-A long shunt compound DC generator delivers a load current of 50A at 500V and has armature, series…

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Q: What is the necessity of 3point starter? What is starter ?

A: STARTER: A device which control the use of electrical power to the equipment. i.e, They can stop…

Q: 7 a. Explain autotransformer starting method and wye-delta starting method of 3-D induction motor…

A: Note: We are authorized to answer one question at a time since you have not mentioned which question…

Q: a. Explain the terms, coil span, coil pitch, short pitching and chording of coils. b. Equalizer…

A: a) Coil span: A coil is made of a single turn or multi turns of a conductor. Each side of a…

Q: Q3- What is the effect of adding additional coil in armature DC-generator?

A: As per the guidelines of Bartleby we have to solve first question only we request you to upload the…

Q: what happen to the dc if it runs without any starter?explain in details with diagram.

A: During the startup of the DC motor, there is very high current and torque developed in the motor and…

Q: What is the fundamental requirements of protective relay?

A: The protective relay is a device which is used to operate the circuit breaker under any fault…

Q: 13. What is meant by the low or poor starting economy of a primary resistor starter?

A:

Q: 55 hp, 440 V, 400 rpm DC shunt motor draws 107 A when operating at rated conditions. The motor has…

A: In this question we will draw diagram of dc shunt motor showing all  resistance,currents and…

Q: c) What is the physical meaning for each of the following induction motor parameters: R1 „R2 ,Rc ,X1…

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Q: equirement of a DC Motor to be selected as a drive motor for Electric Traction.

A: The fallowing are the requirements that is to be fulfilled by a dc motor to be selected as a drive…

Q: Manual Control: Design a dc motor circuit to drive an assembly line consisting of a conveyor belt…

A: In the given drive circuit the dc motor used to drive conveyor at a constant speed of 150 rpm for…

Q: What is starter ? Function of starter?

A: A motor starters main job is to start and stop the motor to which it is attached. These…

Q: A 230V d.c Motor Ra= 0.62 , if the full load armature current is 30A , and the no load armature…

A: A DC motor is a machine which takes DC electrical energy and produces mechanical output at its…

Q: Direction: Enumeration/Discussion. Enumerate/Discuss what is being required 1. Give at least five…

A: By definition, the stator comprises all of the nonrotating electrical parts of a generator or motor.…

Q: Q1. Which of the following is not true of a DC machine commutator? (a) Its made of copper (b) Its…

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Q: 200V shunt generators has an armature resistance of 0.02ohms and a shunt resistance of 50ohms. At…

A: In this question we will find armature current of dc shunt generator.....

Q: a. Draw the schematic diagram for the variable reluctance sensors.

A: According to guidelines we need to solve only first question. according to the question we have to…

Q: Q3: a- Draw the equivalent circuit of three phase induction motor referring all parameters primary…

A: 3-phase Induction Motor- When a three-phase stator displaced by 120 degrees (in space of 120…

Q: In applications such as hoist, gates, movable bridges, street cars, locomotives, and transfer cars,…

A: The suitable motor for such types of loads is DC series motor. Because, DC Series motor gives high…

Q: 12:  What are the most commonly used starting systems used in diesel power plants? Explain them…

A: (12) The initial spinning of an engine's crankshaft is necessary to start the diesel engine. Until…

Q: What should be installed to power the DC water pump, from [stream-turbine-motor-________- water…

A: It is asked to suggest an idea what should be installed to power the DC water pump.

Q: Using the D.C. shunt motor no-load and full-load information given in the following table, determine…

A: The solution is given below

Q: A dc shunt motor operating unloaded at a terminal voltage of 125V at a speed of 1420 rpm. When the…

A: Given dc shunt motor  operating unloaded  at terminal voltage Vt=125 v and speed N=1420 rpm series…

Q: What are differences in term of construction and working principle between Shaded Pole Induction…

A: The shaded pole motor and the capacitor start motor are the two types of single phase induction…

Q: B/ Answer the following: 1- Explain the no-load and short circuit tests of induction motor.

A: Note: We are authorized to answer the first question since the exact one wasn’t specified. Please…

Q: Provide a brief explanation for each of the following questions. Your answers should be concise and…

A: a) The windings and the commutator of the dc machine are usually made from copper due to the…

Q: Q1) Why is a starting resistor used in DC motor circuits?. Explain in detail.

A: As per Bartleby guidelines we are allowed to solve only three subparts, please ask the rest again.

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.