a variable frequency drive can be used on the following industrial devices:
a- AC motor
b- DC motor
c- DC Servo Motor
d- All of the above
Answer- d- All of the above, we can use the variable frequency drive for AC motor, DC motor and in DC servo motor it is possible to use the variable frequency drive so option d is the right answer.
a variable frequency drive can be used on the following industrial devices: a- AC motor b-...
The type of transistor configuration that’s used with a DC servo motor is the A. negative-logic configuration. B. totem pole configuration. C. H-bridge configuration. D. emitter-follower configuration. An inverter can be programmed to stop an AC motor quickly by enabling A. an internal brake. B. DC voltage injection to the motor. C. a stationary AC waveform. D. a reverse pulse action. You’re looking at a tachometer feedback signal on an oscilloscope. The waveform takes a long time to go to...
Research and identify all the mechatronic components used in the following devices. a. Modern washing machine b. Servo-driven industrial robot c. Automated entry door
A 3 phase squirrel cage induction motor is connected to a variable speed drive. The motor should be rated for : A. dc duty B. Brushless operation C. Design E D. Inverter duty
a variable frequency drive should not be used for: 1. speed control 2. soft starts 3. lockout/tagout 4. all of above
Q) The site manager told you that the variable frequency drive (VFD) for a 265 -hp motor costs $34,960. And the cost estimate possible for the VFD for a 129-hp motor is $3,163. The exponent x in the cost-capacity equation is
A servo motor loop A. operates independently from any item attached to the motor. B. is seldom used in black boxes. C. is an open system. D. does not accommodate variable control signals
A servo motor loop A. operates independently from any item attached to the motor. B. is seldom used in black boxes. C. is an open system. D. does not accommodate variable control signals.
3. A controlled single-phase fiull-wave controlled rectifier is connected in a de motor drive in Figure 4. The de motor armature inductance can be assumed large enough such that any motor curent ripple is negligible. (a) Assuming negligible supply reactance, show that the average rectifier output voltage V, in tems of the supply ms voltage E and the firing angle a, is given by 2/2E (6 marks) cos a _ (b) Given that the supply voltage is 230V, 50HZ and...
8) A three-phase thyristor controlled converter is used to drive a motor system. What is the required trigger delay angle a if the required average output DC voltage is 0.5Vm [2 points) a) 90 degrees. b) 45 degrees. c) 58.43 degrees. d) O degrees. 9) A 3-point motor starter arrangement is shown in the diagram below (1 point). Starting Resistence No volt col OFF Soft ron piece Starter handie Spring Over load release Lever Trangular iron Three Point Starter As...
The most common type of AC motor is the a. Series Motor O b. Synchronous Motor C. Shunt Motor d. Induction Motor