Draw the mechanical characteristics forshunt and series motor. 4
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- What are the advantages and disadvantages of using the following types of motors? shaded-pole motor PSC motor split-phase motor capacitor-start–capacitor-run motorExplain: a). Speed characteristics of dc series motor along with suitable diagram. b). Speed characteristics of dc shunt motor along with suitable diagram.a)Explain the speed control methods of direct current motor. b)Compare linear current series motor, shunt motor and component motors in terms of torque and speed.
- A 250V dc short-shunt motor takes a current of 5A. The shunt, armature, and series field resistances are 100 ohms , 0.25 ohms, and 0.80 ohms respectively, what is the SPL?Draw the torque vs Speed characteristics of series-wound DC motor and shunt DC motor. At the time of starting which DC motor must be loaded with 50/60 of the total load and why? [explain with equation].A series dc motor 20-hp, 500-V, is having armature, series field and shunt field winding resistances of 0.08 Ω, 0.3 Ω and 125 Ω, respectively. If the back – emf is 478 V, determine the motor current when the connection is a) long – shunt. b) short – shunt c) series d) shunt
- Answer the followig.a. Give the two main categories of AC motors. Define.b. Discuss the constructional and working difference of Induction and synchronous motor.One of the colleagues argues that a permanent magnet synchronous motor (also called brushless dc motor BLDCM) is the ideal option for constant speed applications under varying loads. Compare the better one of below mentioned induction motor with a BLDC motor with closely similar specifications in the market. Also compare the two motor types in terms of cost.Explain with diagrams the operation of single stack variable reluctance stepper motor. Is it possible to construct a hybrid stepper motor with 2-phase 4-pole and 100 rotor teeth? Explain your answer
- Speed current characteristic of cumulative DC compound motor at largervalues of armature current is similar to that of _____________a) DC shunt motorb) Induction motorc) DC differential compound motord) DC series motorQ/ When a series dc motor is operated at load, which of the following conditions occurs Ans 1- The field current increases 2- The armature speeds increases 3- The armature current decreases 4- The voltage requirement increasesMake a sketch to show the speed torque characteristics of a shunt and compound motor.