Answer Posted / karpagam
The motor speed control for controlling the speed
of an electric induction motor is by modulating the
amplitude and frequency of the driving voltage. When load
increases the speed control controls the speed of the
machine so as to be relatively constant with respect to
frequency of the driving voltage. Obviously,the speed
control controls the amplitude of driving voltage in
proportion to the square of the frequency.
| Is This Answer Correct ? | 4 Yes | 1 No |
Post New Answer View All Answers
. How to calculate the Short Circuit Impedance in Transformer? How to calculate the Short Circuit Impedance in Transformer?
What are the different losses In a de mac1une'! t.xplam
What is George phenomena to start the synchronus machine?
Define the overload capacity of the motor?
what is the AC Plant and how can do the work with parts and picture tell us 150 Tr
I am getting above 60 V as open delta voltage against single phase unit ICT at tertiary delta formed and ICT getting trippped on NDR. ICT tested and found in order. PTs provided on tertiary are tested and in order. what may be the reason?
What is the function of attenuator in cro?
What is super thermal power plant? and how it will differ from normal thermal power plant
What is dc current source? Differentiate between ideal and non ideal current sources?
Why need 3phase machine double earthing?
What is the lower limit of break-down voltage of converter transformer.
What are the disadvantages of hydropower?
What is the formula to calculate the rating of power cable for three phase current.
what is effect of 5amp fuse on 2mva pry protection of transformer
how does a submersible pump work..?