Answer / rabi

KW/Kg is more for 3 phase motor than single phase motor of
same rating. also there is no need of starting winding for
creating RMF in 3-phase induction motor.

Answer / gunasekaran

3phase motor less noise than single phase motor why because
single phase motor always receiving pulsating field but
3phase not like that and then speed torque characteristic
also good for 3phase motor. Resultant flux in the single
phase is zero so it is not self starting but 3phase motor
not like that

Answer / rajiv mahajan

good starting torque
compact size
no capacitor required

Answer / dileep

because if u take a same capacity rating of both 1 phase
and 3 phase ,the size of 3 -phase motor is small compared
to 1-phase.

what is motor contrl center .

3 Answers  

---

What type of bulb used in small size cross symbol boder and original flame type(Deepam)?

1 Answers  

---

what is the role of impedance in transformer?based on secondary f.l.current(139 amps) and impedance(4.07) of 415/415v of 100 kva transformer. what is the primary current?

1 Answers  

---

how on load transformer is chnage the Tapping ?

2 Answers  

---

What is the height of DA, DAL, DB, DC & DDE tower?

0 Answers  

---

state basic meaning of 'INDUSTIAL AUTOMATION'?

0 Answers  

---

What is the function of electron gun assembly used in crt?

0 Answers  

---

how to select the mpcbs and contactor for 3 phase 30 hp star delta motors.for plc control.and tell me the calaculation for future use.

0 Answers  

---

how to find transformation ratio of squirrel cage induction motor

0 Answers   BITM, WER,

---

how we could know that generator running anti clockwise with seeing the rotating direction of prime mover or engine

1 Answers  

---

is it possible to give the total load from the supply generator's maximum in practical?

2 Answers  

---

WHAT SHOULD BE THE BEST CURRENT RATINGS (PRIMARY / SECONDARY)FOR A CT INSTALLED AT THE INCOMING 11KV PANE? WILL IT BE CALCULATED ON THE BASES OF MAXIMUM DEMANT VALUE OR ON SUM OF ALL TRANSFORMER'S KVA? NOMALLY MAX DEMAND REPRESENT THE MAXIMUM OPERATING LOAD OF THE PLANT AND TOTAL KVA OF (SAY 5 NUMBERS TRANSFORMERS) REPRESENT THE CONNECTED LOAD. WHICH i.e. MAX DEMAND KVA OR CONNECTED KVA ARE BETTER TO USE FOR CT CURRENT CALCULATION? PLEASE ANSWER.

0 Answers  

---