16.a. Enclosures housing motor control equipment in a dusty indoor environment where there is danger of explosion should be classified as A. NEMA 7. B. NEMA 12. C. NEMA 1. D. NEMA 9. 16.b. Feedback is used in drive systems to A. remove the load quickly and accurately. B. give the drive information on the status of the motor and load. C. give operators information on the status of the drive. D. reduce the startup torque of the motor and load.

Q: (iv) The motor being delta connected rather than star connected.

A: (iv) Wehn motor is connected in star connnection then the supply voltage is 3 times than the motor…

Q: The load test method for d-c machines which requires that both the motor and the generator be…

A: In order to determine the various parameters of the dc machine, the load test method is used.

Q: a. A 4-pole, 50 Hz, 440 V, 85 kW, 3-phase star-connected synchronous motor has resistance and…

A: a) Let's go through each calculation step by step.  Given DataNumber of poles,   P=4Frequency,…

Q: 420 V, three-phase 60 Hz, star connected, induction machine has the following parameters: = 0.15…

A:

Q: 17.A. The arrangement which can NOT be used to control the speed of a universal motor operating from…

A: Here we discuss about the universal motor & a 1phase ac motor.

Q: a. A 4-pole, 50 Hz, 440 V, 85 kW, 3-phase star-connected synchronous motor has resistance and…

A: Step 1:Step 2:Step 3:Step 4:

Q: 19.a. The magnets that are used in the field of a quality DC PM motor are made from A. rare-earth…

A: Operation of permanent magnet DC motor depends on the flux and flux is produced by magnets. So the…

Q: 21.a. When field voltage is controlled to provide a method of variable speed control, the system is…

A: Electric Motor:  An electric motor is a mechanical mechanism that transforms electrical energy. Most…

Q: [Q4 A] A 3 phase, 440v, 1740 rpm, 60Hz, 4-pole, SRIM. has the following parameters per phase:…

A: The given information about a 3-phase, SRIM is shown below.Stator supply voltage is V1=440 Volts…

Q: 6. A 2.8 KW, 400 V, 50 Hz, 4 pole, 1370 rpm, delta connected squrriel cage induction motor has the…

A:

Q: Write the control mechanism of stepper motor

A: Control mechanism of stepper motor Full step mode - The rotor continues through 200 distinct steps…

Q: 7) For the motors given below, identify the type characteristic, and application.

A: (a)We need to find DC the motor type, characteristics, and applications.(b)We need to find the AC…

Speed control of motor

Speed control by DC motor-speed controller is required to realize variable speed drive. Whenever a motor drives a particular load, it is called drive, and variable speed drive refers to a load requiring variable speed. All this is obtained by a DC motor speed controller.