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Answer :

The electric motor used in portable drills is universal motor.

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Description : The motor used for electric traction is  (1) D.C. shunt motor (3) D.C. series motor  (2) D.C. compound motor (4) Synchronous motor

Last Answer : The motor used for electric traction is D.C. series motor

Description : Where are portable screw compressors used?

Last Answer : Where are portable screw compressors used? The use of a portable screw air compressor in road, construction, mining and installation works indicates that its area of practical use is ... with these important, but fairly simple requirements will significantly lengthen the life of your compressor.

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Description : Describe the reason of using dc series motor for electric trains.

Last Answer : Electric trains require an inverse torque speed characteristics for proper operation. That is a higher torque is required at start (when speed is nil or low) and as the train picks up ... torque - speed characteristics of DC series motors match, these motors are suitable for electric trains

Last Answer : The power mentioned on the name plate of an electric motor indicates the output power available at the shaft.

Last Answer : The motor used for the compressors is capacitor-start capacitor-run motor.

Last Answer : The shaded pole motor is used for low starting torque.

Last Answer : The speed control of universal motor used for sewing machines is by varying the resistance.

Description : Select insulating materials for following parts : (i) Insulation between heating element and base plate of electric iron. (ii) Insulation used over copper or aluminium conductor used for making coils. (iii) Transformer bushings. (iv) Insulation between transmission line and pole.

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Description : The storage battery generally used in electric power stations is  (1) zinc carbon battery (2) lead acid battery (3) nickel cadmium battery (4) lithium -ion battery

Last Answer : The storage battery generally used in electric power stations is lead acid battery 

Description : How can a magnetic field be used to generate an electric current?

Last Answer : Magnetic  field  can  be  used  to  generate  electric  current  on  a  condition  that  it  is  on  a  rate  of  changing  magnetic  flux.  (Faraday's  law)

Description : Write the steps to rewind an electric motor

Description : An electric motor in which both stator field and rotor rotates with same speed is called?

Last Answer : An electric motor in which both stator field and rotor rotates with same speed is called synchronous motor.

Description : What is an electric motor drive?

Last Answer : An electric drive is a complex electromechanical system that drives various actuators in industrial and industrial work machines. In this case, control is carried out using a technological process ... calculation of the kinematic and load characteristics of the electric drive is carried out.

Description : How does an electric motor works?

Last Answer : In the electric motor there are two types of part 1)moving and 2)stationary In stationary part containing field winding whis use to provide uniform maganetic field it at inner side of yoke In moving ... on it and this force is from all direction we can say it is torque.and motor armature rotates

Description : What is the use of an electric motor?

Last Answer : Electrical motors are use for converting electrical energy to mechanical energy. It may be use in fans, pumps, washing machine, cranes, trains, factories, industries etc.

Description : Portable Cement Mixers

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Description : Mini Portable Cement Mixers

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Last Answer : In a portable instrument, the controlling torque is provided by spring.

Description : State the insulating materials used in motor. Write temperature class and withstand temperature ranges for them. 

Last Answer : The insulating materials used in motor are as belows: 1. Cotton, 2. Silk, or paper, 3. Press board, 4. Resins 5. PVC 6. Cellulose-Fiber, 7. Enameled coating, etc  ... Over 180° Mica, porcelain, ceramics, glass quartz, asbestos, treated glass fiber or treated asbestos. etc.

Description : State starters used for i) 3-Ph squirrel cage induction motor (3HP) ii) D.C. motor 

Last Answer : Name the starters used for following motors : i) 3 H.P. 3-Ph squirrel cage I.M: i) DOL starter OR ii) Star-Delta Starter OR ii) Auto transformer starter OR iii) Soft start starter.  ii) D.C Shunt Motor : 1) Armature resistance starter (Three Point Starter) OR 2) Four Point Starter 

Last Answer : The repulsion-start induction-run motor is used because of high starting torque.

Last Answer : In a two value capacitor motor, the capacitor used for running purposes is paper spaced oil filled type.

Last Answer : The motor used on small lathes is usually single-phase capacitor run motor.

Last Answer : A shaded pole motor can be used for toys, hair dryers, circulators etc.

Last Answer : A centrifugal switch is used to disconnect starting winding when motor has picked up about 50 to 70 per cent of rated speed.

Description : The damping winding in synchronous motor is generally used to?

Last Answer : The damping winding in synchronous motor is generally used to provide starting torque and prevent hunting.

Description : Which type of starter is used to start the DC motor?

Description : Which type of motor is used in lift?

Last Answer : Synchronous motor

Description : Why DC motor is used for traction?

Description : Which motor is used in traction system?

Description : If you were to be personified as a hand tool, I.E. combination wrench, screwdriver, etc. what tool would you be?

Last Answer :

Description : A _________ is used to measure the stator % winding temperature of the generator.  (A) Thermocouple (B) Pyrometer (C) Resistance thermometer (D) Thermometer

Last Answer : A Resistance thermometer is used to measure the stator % winding temperature of the generator. 

Description : Peterson coil is used for :  (A) shunt compensation of lines (B) grounding of system neutral (B) reduce fault currents (D) connecting interconnected systems

Last Answer : Peterson coil is used for : grounding of system neutral

Description : Stepper motors are used in  (1) printers (2) lifts (3) amplifiers (4) oscillators

Last Answer : Stepper motors are used in printers 

Description : In a dc machine, interpoles are used to  (1) neutralize the effect of armature reaction in the interpolar region (2) generate more induced emf in the armature (3) avoid interference of the armature flux with the main -field flux (4) reduce the demagnetizing effect of armature reaction

Last Answer : In a dc machine, interpoles are used to neutralize the effect of armature reaction in the interpolar region

Last Answer : In D.C. machines fractional pitch winding is used to reduce the sparking.

Last Answer : Starters are used with D.C. motors because to restrict armature current as there is no back e.m.f. while starting.

Last Answer : The capacitors used in single-phase capacitor motors have no polarity marking.