what is piezoelectric transducer?give an example in power plant n state its principle?

0 Answers   Jindal,

---

what is the reason while warning lamp is on while the engine is cranking?

0 Answers   Jindal,

---

So I'm a first year apprentice and I'm having a tough time with knowing the difference between AI, AO, DI, DO. I'm having a hard time understanding what devices are which and why. Can someone explain this to me?

2 Answers  

---

How to convert ma to mv? Resistance 250 ohm is connected in series or Parallel?

3 Answers   ISRO,

---

plz exlain the dcs system of ABB sympony hamnony

1 Answers  

---

why we use 4-20 mA to do calibration of the instruments.why we cant use 0-20 mA?

8 Answers   Emerson, IEM,

---

1)unmovable objects have frequency or not?if that object have frequency,how do we measure and transmit? 2)how do u measure the continuity without multimeter? 3)we put 24volt dc supply in railway track how many distance it is traveled without voltage drop?

1 Answers  

---

How to calculate the range of level transmitter?

4 Answers   Wika,

---

how to check thermocouple ,its working or not?

14 Answers   Coca Cola, Ford, Honeywell,

---

please give me the syllabus and sample questions if possible for Instrumentation for Vizag Steel plant MT (Trainee) 2009 exam

1 Answers   Pedvak, Steel Plant, Vizag Steel,

---

Why do we go for 4-20mA? why not other standara?

6 Answers  

---

define optical temperature detector

1 Answers  

---