overload heater element

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: Split-phase motor, 110 volt, 60 Hz, 4-pole, has the following constant and losses: R₁ = 2.02 (2 X₁ =…

A: Given: Supply voltage V1=110 V Supply frequency f=60 Hz Number of Poles P=4 Core loss Pc=24 W…

Q: 5. A 20-Hp, 220-volt, 540rpm shunt motor has an armature and a field resistance of 0.24-ohm and…

A: Given, Vt = 220 VN = 540 rpmRf = 157 ΩRa = 0.24 ΩRst = 1.7 Ω Assumption : 2-volt brush drop…

Q: A 70 Hp, 3-phase, 6 pole, 480 V, 75 Hz, induction motor has a 5 percent slip at on efficiency of 80%…

A: Given : A 70 Hp three phase induction motor, No of poles=6 V=480V, efficiency=80% and power…

Q: 33. The rotating magnetic field of a two-pole molor travels 360 electrical degrees. Ilow many…

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

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Q: What removes the starting winding from the electrical circuit of an opentype split-phase motor once…

A: in the split-phase motor when the motor reaches to 75 % of the operating speed because the starting…

Q: When a d-c motor is tested by the electrical input method, the field rheostat is adjusted to give A.…

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

Q: 2. Described The basic principles of methods to start 3-phase induction motors below: A. Star-Delta…

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Q: 1. Explain the difference between a slip ring and a squirrel -cage motor.

A: WOUND ROTOR (SLIP RING):- The rotor windings is uniformly distributed and is usually connected in…

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: A shunt motor is connected to 230V line and running at 1000r/min. Armature current is 60A and total…

A: “Since you have posted a question with multiple sub-parts, we will solve the first three sub-parts…

Q: 2. When multiple start stop pushbuttons are required the stop buttons are connected in and the start…

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Q: 01 :. A 220V Shunt motor has a Current af 2 04. The armature Cr resistance is o.52. It's required to…

A: Given DC shunt motor V=220 V Ia= 20A Ra = 0.5 ohm Imax =40 A

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: Q2) A small three phase induction motor has a short-circuit equal to 5 times the full load current.…

A: Step 1: Circuit diagram of resistance starting:Step 2: In starter resistance starting, reduced…

Q: e) The motor is now connected differentially compounded. What is the motor's field current in (A)…

A: From the circuit diagram, IF=V(RF+RAdj)=240(75+175)=0.96 A From the table given in question,  EA…

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: A 480 V, 3-phase, 50 Hz, 6-pole, slip-ring, Y-connected induction motors has the following…

A: In the question, Find the maximum torque if 480V , 50Hz 6pole slip ring star connected. Rotor…

Q: A) What is the rotor speed of a 36-pole 60-Hz 440-V synchronous motor? a) 180 rpm b) 200 rpm c) 240…

A: (A)  Given, Number of poles (P) = 36 Frequency (f) = 60 Hz In synchronous machine Speed of rotor is…

Q: what is safe ? ac or dc motor ?

A: Introduction:   Regardless of which current we’re working with, both AC and DC are highly dangerous…

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: 22.a. The maximum torque produced by a split-phase motor is also called the A. full-load torque. B.…

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Q: A three phase star connected six pole induction motor has parameter…

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Q: A selector switch Andrés two- aire piloto debiese cannot be used to comtrol a larger motor directly…

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Q: Grade the resistance of a 5 section starter for a 3.7 kW, 250 V, 1000 rmp D.C. shunt motor from the…

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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: Q11/ choose the correct answer In 3-phase induction motor, the starter is necessary because…

A: In 3 phase induction motor , the starter is compulsory.

Q: CRPET 2amEiNee 4 - Explain, resistance ? S - Why it without load 6 - Which is be wused in answer .…

A: We’ll answer the first question since the exact one wasn’t specified. Please submit a new question…

Q: Find the equivalent capacitance between points A and B of the given circuit 3.5 uF 5.0 μΕ 8.0 µF 1.5…

A: The equivalent capacitance can be calculated by reducing the parallel and series connected capacitor…

Q: A 15 kW, 400 V, 950 RPM , 3 phase, 50 Hz, 6 pole Cage motor with 400 V applied takes 6 times full…

A: The data provided in the question are:

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

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Q: A 6-pole, 230-V, 50-Hz, Y-connected, 3-phase induction motor has the following per- phase…

A: Given P=6 VL= 230 V N=950 rpm s= slip f =50 Hz

Q: Select suitable three-phase motors for various given application giving details of ratings, starter…

A: A motor is required for an industrial air extraction system.The fan speed should be constant between…

Q: 53. A 200 W, 230 V, 50 Hz capacitor-start mo- tor has the following winding parameters: Main…

A: Given a 200 W, 230 V, 50 Hz capacitor start motor has, Main winding parameter: R=4.5 Ω, XL=3.7 Ω.

Winding and Constructions

Alternating Current (AC) winding is generally of the 3-phase type due to the inherent advantages of the 3-phase machine. Armature coils must be connected to the yield balance (equivalent in magnitude and 2/3 of the series phase difference of the rod) 3-phase electromotive forces (emf). The armature should be divided into step-bands to start with slots around the perimeter.In the construction of AC machines, the frame is used as an external protective shield to protect it from environmental conditions. The frame also serves as the outer perimeter, allowing the interior to be easily placed. The static state section of the devices is the stator winding attached stator.