Answer Posted / hkrish.eee

safety

model question paper for supervisor trainee

1599

---

what are the advantages and disadvantages of speed control of 3 phase induction motor by varying frequency explain with drawing

2168

---

What is the actual meaning of thermal power efficiency ?

1583

---

what are the maximum available current, voltage ratings and switching speeds of the power electronic devices thyristor, power mosfet, igbt, and mct?

1667

---

if we run a 3 phase machine on two phase what will happend??? given answer with solid reason please

1593

---

---

How to measure size of cable on a given load

1377

---

What is the normal phase difference between the voltage and the no-load current in a transformer?

684

---

Is there any reason that we get shock on touching phase wire because the earth is at neutral potential? Is there any reason that the earth is at neutral potential because the neutral is earthed in apower station

1546

---

i have 90kw motor.so i choose connect cable .please what is parameter checked so please give to formula

1723

---

what is the operating time for LBB and how does the LBB relay realise whether cb is opened or not?

1489

---

brief notes on ammeters

1529

---

how to calculate maximum current

1729

---

grr resistance & contrator malt continuous

1671

---

how we calculate torque ? how we improve it ?where torque will either motor or generator ?

1568

---

Is any generator is developed which is operated with out diesal or other expensive source?

1628

---