Answer / rajkumar

current tr, (voltage tr---1 phase, 3 phase---LT, HT)and power tr
current tr--- used mainly to measure current flowing in a
conductor(current flowing conductor is primary and you will
get mA in secondary coil which you can use for measurement)
voltage Tr----to boost or reduce voltage ..ie if you apply
low voltage in primary winding you can get high voltage at
secondary winding and vice versa according to winding
designs. core and shell are designed to minimise tranform
losses.
power Tr---tranforms both current and voltage ..winding with
electronics to boost or reduce power

which instrument is used to study the structure of phloem and xylem tissue?

1 Answers  

---

what is the function of a diaphragm?

1 Answers  

---

what is the relation between flow and pressure.for example relationship between level and pressure is p = phg like that i want ans for this question.and also how to calculate orifice sizing and flow transmitter. pls some one ans for this questions.

3 Answers   Orchid, SRF,

---

A temperature sensor (RTD) connected via a temperature transmitter is adjusted to give an output of 4ma at 60 deg and 20 ma at 600 deg. This output (4-20ma) from the transmitter is connected to an IGBT-inverter to control a high speed (-12,000 to +12,000 RPM) DC motor. And in the inverter it is programmed as, for 4ma the motor speed will be -3,000 RPM and for 20ma the motor speed will be +10,000 RPM. The question is : If the motor speed is +5,500 (RPM), what will be the temperature? (-sign indicates that the motion is in reverse direction).

9 Answers  

---

i want to Measure the Difference pressure of Packed distillation Column of height 3 mtr. h.p. side connected to bottom & L.P. side connected to the top , so tell me what will be THE URV & LRV of that D.P. transmitter?

5 Answers  

---

What is capacity of impulse line tube ...answer in psi

2 Answers   Shell,

---

can we copy the software from a transmitter using hht(hart 275) ?

0 Answers  

---

What types of thermocuple are mostly used?

6 Answers  

---

What is the cv of a control valve?

2 Answers   CCIE,

---

what is the difference b/w wet leg & dry leg level method

2 Answers  

---

What do you know about gail?

0 Answers   GAIL,

---

how to work MIL contol valve posistioner ?

0 Answers   ABB,

---