Answer / ravindhar

bcoz in star connection phase voltage is 0.57times the line
voltage. so that the insulation required is less. but in
the case of delta connection phase voltage is equal to the
line voltage. the insulation required is more.so the cost
of the equipment is also more.

Answer / pandi

in star connection phase voltage is 0.57times the line
voltage. so that the insulation required is less. but in
the case of delta connection phase voltage is equal to the
line voltage.main concern is starting voltage in case of
delta if the starting voltage is more then starting current
also more compare then star so we r using star connection

Answer / biswaindu parida

In Ht motor Harmonics of 5th,7th and above order are created. To provide a path for the this unbalanced currents Star connection is made so that those currents will flow through the neutral of the star connection. which is not possible in delta connections.

how DC motor operating in detail .pls any one guide me .iam not clear idea about that .thank u

2 Answers  

---

how much winding resistance of 0.75kw to 12.5kw 3ph sqwiralcage induction motor?

0 Answers  

---

why the neutral of power transformer is always earthed?

1 Answers  

---

Can the efficiency of transformer be measured with the help of wattmeter readings taken at primary and secondary side? Support the answer.

2 Answers  

---

whether choke act as a voltage regulator in tubelight or not?

1 Answers   Bhel,

---

what are the different pre- commissioning tests performed on distribution transformer, power cable and switchgear?????

1 Answers   Reliance,

---

When we use a multimeter, while checking continuity of a closed circuit , what is happening inside multimeter, how it is working to produce a beep wheather it is closed or open.. is there any internaly voltage/current source inside multimeter?

3 Answers   TNEB Tamil Nadu Electricity Board,

---

What is meant by directional power and reverse power relay ?

1 Answers   HAL,

---

How can calculate the daily electrical consumption of 7.5 HP motor, if the moter runs 24 hrs continiously. Also have to know about 3.5 hp chiller.

0 Answers   Wipro,

---

What are conduct on the testing in cf in ur site?

0 Answers  

---

What happens if ac excitation is given to the field of an alternator

3 Answers   Aurobindo,

---

pls send me some of the solved question booklet of Junior Engineer -2 (ELE) in RRB

1 Answers   RRB,

---