Explain how a direct online (DOL) magnetic starter works with diagrams and pictures
Q: What is the working principle of the Permanent Magnetic Moving Coil Movement (PMMC)
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Q: H.W 2/ A four poles d.c Motor with a progressive simplex wave winding, 15 slots, Draw developed…
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Q: Draw and explain the magnetic hysteresis loop
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Q: Discussion: 1) What are the limiting of using the triggering of thyristor by DC current practically?
A: “Since you have asked multiple questions, we will solve the first question for you. If youwant any…
Q: What is the purpose of the magnetic contactor?
A: Magnetic contactors are available in the electrical powered motors in the form of electrical relay.
Q: The armature of a 6-pole, lap-wound machine has 36 slots. Determine the slot pitch, the front pitch,…
A: We need to design armature winding for the following configuration: number of poles P = 6, number of…
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Q: 12. The current in the armature times the resistance of the armature is equal to: The source voltage…
A: The solution is given below
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Q: Q 4. Explain different types of electrical actuators and their working principle to be used in…
A: The actuator is a mechanical or electro-mechanical device that is used to control and positioning…
Q: A dc motor having flux per mole of 0.05Wb, 6 ploes containing lap winding with 600 conductors. The…
A: The data given in the question is: Flux(ϕ)=0.05Wb, P=6, Z=600, N=500rpm, Ra=0.25 ohm, Ia=40A, lap We…
Q: briefly describe the phenomenon of magnetic hysteresis.
A: Firstly I will define magnetic hysteresis. Then I will explain the hysteresis curve. Then I will…
Q: i) a) Draw the symbol and schematic diagram of moving iron meter. b) List out the range of basic…
A: as per question requirement i have to answer any two question. we need to draw the symbol and the…
Q: 11. Write down a program with the procedures to rotate a motor in both directions.
A: We need to write the program with the procedures to rotate in both directions.
Q: Some Unique Features of the Hysteresis Motor
A: Hysteresis motor is a type of motor which comes under the category of synchronous motor which has…
Q: A four poles d.c Motor with a progressive simplex wave winding, 14 slots , Draw developed diagram…
A: DC motor with a progressive simplex wave winding; pole=4 slot=14 Draw the developed diagram; a)The…
Q: 2. Explain electrical contact resistance. Holm model of electrical contact resistance. Contact…
A: It is asked to explain contact resistance and the Holm model of contact resistance. Also it is asked…
Q: List three engineering controls that can be used to minimise the risk of electric shock and briefly…
A: Insulation is needed in a wire or a certain device from which there is a chance of getting an…
Q: 3. Write any four differences between NC and CNC machines.
A: Ans. Given below
Q: What is the function of the DC motor armature Choose one answer: a. Performs the function of force-…
A: According to guidelines we need to solve only the first question. According to the question we have…
Q: Explain the operation of the blowout coil used in dc contactors
A: A blowout coil is a safety device used to suppress electric arcs between contacts when switching…
Q: 7. Which of these is the commutator function in the generator? A. Acts as a rectifier that converts…
A: As per our policy i have attempted only first question. 7. Commutator: In generator the main…
Q: 2. Figure 2.2 represents the classic schematic of the armature circuit of a standard DC motor. R. I,…
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Q: Mechanical balance mechanism
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Q: A four poles d.c Motor with a progressive simplex wave winding, 14 slots , Draw developed diagram…
A:
Q: How long a wire is needed to coil a spring having a mean diameter of 1 inch if there are 8 active…
A: Given, A spring has a mean diameter. d = 1 inch Total number of coils, n = 8
Q: A dc shunt motor after running for several hours on constant mains of 400V takes a field current of…
A: In the question,A dc shunt motor after running for several hours on constant mains of 400V takes a…
Q: (a) A basic permanent magnet moving coil (PMMC) movement can be converted into an ohmmeter with…
A: As per Bartleby guidelines we are allowed to solve only one question, as both questions are…
Q: 4. What is the purpose of the magnetic contactor?
A: MAGNETIC CONTACTOR: Magnetic contractors are same as electrical relays which are used in Induction…
Q: provide advantages, disadvantages and then discuss different applications of the DOL motor starter…
A: As per Bartleby guidelines we are allowed to solve only one question, please ask the rest again. The…
Q: What is the benefit of soldering when you do it correctly?
A: Soldering is a metal-to-metal connecting procedure in which solder is melted and then used to…
Q: A motor will undergo three major conditions throughout its operation. State and explain what takes…
A: Modes of motor operation Motoring ( Reverse and forward direction) Breaking ( Reverse and forward…
Q: QUESTION 13 The resistance of the Armature's conductor coil(s) in most motors is: quite high,…
A: The resistance of armature conductors are very low of range 2 to 4 ohm the reason behind the low…
Q: What are the advantages of performing ignition?
A: it is provided performance with reduced emission This system kept an coil that is ignition coil…
Q: List the important terms for an electro-mechanical system.
A: According to the question we have discuss the electro-mechanical system.
Q: Discuss the operation of non-contact torque measuring instruments
A: Non-contact torque measuring instruments are torque sensors. A type of transducer that transforms…
Q: Speed of the motor is can be varied by varying _________________. a. Field Voltage b. Armature…
A: In this question we will write how we can change of paper of motor...
Q: if the armature winding has fractional pitch of 7/9, then coil span is ___ electrical degress
A: The solution is given below
Q: Explain how a shading coil prevent an ac contactor from chattering
A: A shading coil is a single or a few turn of electrical conductor located in the face of the magnet…
Q: List 3 type of operating mechanism for magnetic contactor
A: Magnetic contactors are a type of electrical relay found on electric motors. They act as go-between…
Q: electrical machines Explain how the experiment is done by drawing the connection diagram of the…
A: Explain how the experiment is done by drawing the connection diagram of the alternator idle test.…
Q: Explain the differences in protection between the thermal and magnetic components in a magnetic…
A: Circuit breakers are used for the Protection of the electrical appliances and circuits during the…
Q: With aid of a diagrams explain how the starter of a DC motor works
A: DC motors are protected by starters from damage caused by extremely high current and torque during…
Q: Give brief description of how a magnetic contactor operates
A: A magnetic contactor balances the change in frequency in the electric motor. In simple words, it…
Q: Explain how DOL magnetic starter works step by step with diagram and pictures.
A: The DOL method which is also known as the Direct On Line starting method, It is started with rated…
Q: How does short circuit protection of automatic fuse take place? a) Magnetic b) Thermal c)Thermic d)…
A: B)Thermal Fuse is a piece of wire of a material with a very low melting point. When a high current…
Q: A four poles d.c Motor with a progressive simplex wave winding, 13 slots, Draw diagram and note the:…
A: “Since you have posted a question with multiple sub-parts, we will solve first three sub-parts for…
Q: Compare the operation of electrically and mechanically held magnetic contactor
A: Operation of electrically held magnetic contactor: When the contactors are closed, then in…
Explain how a direct online (DOL) magnetic starter works with diagrams and pictures
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- 3. i. Write the working principle of Permanent Magnet Moving Coil instrument mention the importance spring used. ii. Explain how a single PMMC instrument can be used as ammeter and voltmeter.the armature mmf can be -2 reduced by reluctance of the magnetic the circuit in the region of the pole .tip a) Increasing, O b) decreasing O c) don't put OCalculate the voltage of the DC source and the stored field energy of the actuator illustrated infigure 1.1. The dimensions of the magnetic circuit proposed in shown figure 1.2. The core of the magnetic circuit is made of cast steel material whose B-H characteristics is illustrated in figure 1.3. The coil in figure 1.1 has 250 turns, and the coil resistance is 5 ohms. For a given length g=5mm, a Dc source is connected to the coil to produce a flux density of 1 Tesla in the air gap.
- What is clamper? Briefly explain its working.Q2. A 4-pole, wave-wound armature has 72 slots with two coil-sides per slot, each coil has four turns. If the flux per pole is 20 mWb and the armature rotates at 720 rpm, what is the induced emf across the armature? (Ans. 276.48 V) 0.05The use of contactors in motor starter