Answer Posted / j venkteswaran
VFD is for controlling the speed of the motor by adjusting
the frequency and voltage.
If voltage decreases frequency will decrease,if voltage
increases frequency will increase this is the general
principle as V/f ratio
Is This Answer Correct ? | 12 Yes | 7 No |
Post New Answer View All Answers
Factory acceptance test. FAT. For 132 kv transmisstion towers what is that meaning and what are the tests commonly companies perform now days.
y we use neutral,all r told its used to for closed path..k its a just used to closed path,in a transmission line y we put same conductor used n both phase and neutral..if we use less than phase conductor in neutral mean we ll reduce cost its right r wrong..if we use mean any problem occur in transmission line..
Stator of 3-phase IM has 3 slots per pole per phase. If supply frequency is 50 Hz, calculate the speed of rotating stator flux A 1000 rpm B 500 rpm C 1500 rpm D 1440 rpm
What is the difference between single point and double point bonding. please kindly detail about bonding of cables.
what is PDU in transformer?? which company manufacture??
Which type of motor is used in trains, what is the rating of supply used explain working principal?
can we find the inductance of a induction motor?
Why the cores of large transformers build up of circular cross section?
can anyone explain 11kV 3core cable megger,hi pot test procedure with connection details?
What is the main use of rotary phase converter ?
the typical output of a solar cell is........
what's the requirement of Dy11d0 connection of 3 phase transformer?what's use of it?
what transformer we used normally and upto which kva?
how to measure the transformer resistance values(dyn11)?and howmuch the minimum value?
how invertor convert the dc into ac give brif detail