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

0 Answers  

---

which circuit breaker enclosure is best for maintenance guy? 16 bolt & 20 bolt squre or 16,20 bolt hinge

2 Answers  

---

If breaker is undefined position, first step to do.

0 Answers   KSEB, L&T, Siemens,

---

1 Kva = How many KW

3 Answers   Reliance,

---

Why -48V dc power supply using in telecom field?

7 Answers   APC, Cisco,

---

---

what do u mean by starting torque? how it should be for a good motor? what is the relation between starting torque and power factor? What is the relation between efficiency and starting torque?

2 Answers  

---

what is the power factor used by the PHCN in nigeria? 2. what is the difference between an alternator and generator. 3. Generation of poweris in KV but how is transmission is in MW. 4.If the transmission of power is 20,000MW how can it be increaesed to 80,000MW

0 Answers  

---

What is the formula for calculating Transformer Losses & Efficiency. I want to compare the Transformer efficiency at different loading condition.

6 Answers   Rays Power Experts, Techser,

---

A 7 storey building has a floor area of 35,000sq.ft on each storey. On the ground floor 11KV electrical sub-station is to be erected. A load of 3kw for every 400sq.ft (p.f is 0.8) is proposed for each floor. fire pump 7.5hp, water pump 5hp, lift 2 nos, each 10hp and 20shop load of each shop is 5kw. calculate a. load each floor b. total load of building c. L.T feeders for aech floor and from transformer to main. d. distribution diagram e. capacity of sub-station/capacitor bank f. line diagram

0 Answers  

---

what is deffrent alternatid and gernater

2 Answers  

---

What is speed mode?

0 Answers  

---

What is the difference between PT for metering and PT for protection ?

3 Answers   Dewan Cement,

---