What motor is used in tramways?
This paper compares five different motor types used in variable speed drives: a dc motor with a mechanical commutator and with electromagnetic or permanent magnets excitation, a cage induction motor, asynchronous cascade with a slip‐ring motor and a brushless motor with PM excitation.
Which of the following motors is not used for electric traction?
DC shunt motors are not suitable for traction purpose, the reasons are given below: 1. The dc shunt motor is a constant speed motor and its speed-torque characteristic does not meet with the requirements of traction. i.e., the power drawn from supply mains varies directly as the load torque.
Which motor is used for elevator?
Lifts are preferred by AC slip ring or DC compound motor. In case of single phase installation, the commutator motors are preferred. Variable Frequency drive electronic controls are used in the latest lift designs.
What is the range of horsepower of diesel locomotive?
Most yard-switching and short-haul locomotives are equipped with diesel engines ranging from 600 to 1,800 horsepower; road units commonly have engines ranging from 2,000 to 4,000 horsepower.
Which DC motor is used for traction?
Traditionally, these were series-wound brushed DC motors, usually running on approximately 600 volts. The availability of high-powered semiconductors (thyristors and the IGBT) has now made practical the use of much simpler, higher-reliability AC induction motors known as asynchronous traction motors.
Which DC motor is used in traction system?
|DC series motor||Traction system, Cranes, air compressors|
|DC shunt motor||Lathe Machines, Centrifugal Pumps, Blowers, Conveyors, Weaving Machine, Spinning machines|
|DC compounded motor||Presses, Shears, Elevators, Rolling Mills|
Which motor is used for crane travel?
∴ The motor normally used for crane travel is AC slip-ring motor.
Which motor is used in fridge?
Single phase induction motor is used in household refrigerator.
|Single phase motor||Application|
|Capacitor run motor||Compressors, Conveyors, Refrigerators, Air conditioners, Ceiling fans|
|Shaded pole motor||Hair dryers, Toys, Record players, Small fans, Electric clocks|
Which motor is used in escalator and elevator?
Motors typically used are AC induction motors. All escalators have four gears; two drive gears on present on either side at the top and two return gears are there on either side at the bottom. The electric motor runs these four gears.
Which motor is used in train?
DC motors are used on trains is because of their high torque and good speed control. Compared to AC motors, DC motors can provide industry applications with a fine balance of strong starting torque and controllable speed for seamless yet precise performance.
Where rail engines are made in India?
Built by French company Alstom under the government’s Make in India programme at the Railways’ Madhepura factory in Bihar, these engines are the highest-powered locomotives that will run on Indian rails.
What is the efficiency of diesel locomotive?
The efficiency of the steam locomotive has been given as 11 percent and that of the electric locomotive as about 20 percent. Neither value compares favorably with the 28 percent estimated for diesel locomotives, the ratios being 1.82 for electric/steam, 1.4 for diesel/electric, and 2.55 for diesel steam traction.
Which locomotive has highest operational availability?
The electric locomotive has the highest operational availability.