Explain the different between gate valve and globe valve?

1146

---

Explain the functions of paring disc and flow control disc in purifier and clarifier?

1223

---

Explain why self closing sounding pipes are used onboard?

997

---

Define crankshaft explosion?

1200

---

What is center priming?

1051

---

What is the purpose of wearings in the centrifugal pumps?

1083

---

Explain the purpose of o-ring, wearings in the centrifugal pumps?

1148

---

Why plc require in analog input 4-20amp & 0-10 volt?

1147

---

What is the difference between mmwc and mmwg?

1392

---

Explain the difference between mmwc and mmwg?

5676

---

Explain why use mmwc unit?

1057

---

What are the types of valves?

1159

---

Where is wet leg is used?

1067

---

Define cryogenic?

1177

---

Explain why plc require in analog input 4-20amp & 0-10 volt?

1102

---