Answer / anand

when the synchronous motor operates beyond synchronous speed
delta(angle bt v&e) decreases.then magnetic torque decreases.and the hunting starts.

Answer / lokeshraj

A synchronous motor always tries to achieve the
shynchronous speed. IF the motor is running with the higher
the syn. speed the direction of torque will be reversed and
motor will start working as a generator and will start
getting with the external source. and will come in syn.
speed. if there is a sudden change in speed of motor then
there will b hunting. in which the motor speed oscillates
about the syn. speed. thanx.

Answer / harish

synchronous motor beyond synchronous speed will work as a
synchronous condenser which will give leading power

What does Bode plot tell you?

0 Answers   Ericsson,

---

dear all, How do i increase UPS (1000VA)backup time ? i have connected 2 12v wold you please 120 aH battery externally. ups charge the lead acid battery only 12.7 volt. backup time only 10.00 minuts and gose off. can any one of you help me?

1 Answers   Technomax, ups,

---

I have an enquiry of develop solar power plant, 0.69/11kV, 1500kV/750/750kVA, Dy11y11 Transformer. I want to know what does 1500kV/750/750kVA means? Sorry if this is a noob question.

2 Answers  

---

What is open loop and control loop systems?

0 Answers  

---

Magnetizing current for induction motor compared to transformer is= A equal B more C less D depends on load

1 Answers  

---

Why it is necessary to isolate fire fighting when you are taking shutdown for lv board.

0 Answers   KSEB, L&T, Siemens,

---

How to calulate Locked rotor amper(LRA) for compressor type motors?

0 Answers   MAF Dalkia,

---

How many methods to take IR value of Current Transformer?

1 Answers  

---

Work done in a free expansion process is

0 Answers   Caterpillar,

---

What are your future expectations from this company and how long do you intend to work with this company if employed?

1 Answers  

---

in slip ring motor if motor specification is given how we calculate its rotor resistance in starting

1 Answers  

---

how much current a 100 sq mm busbar will carry?

1 Answers   ABB,

---