What is the name given to portion of thermal energy to be necessarily rejected to environment ?

1049

---

Why pistons are usually dished at top ?

1268

---

What for admirality brass used ?

1117

---

What are killed steels and what for these are used ?

1243

---

Explain nuclear reactor?

1184

---

Why boiler is purged everytime before starting firing of fuel ?

1132

---

Out of electric heater and heat pump, which is economical in operation ?

1110

---

What is bauschinger effect ?

1131

---

If percentage elongation of a material is more than 200%, it is classed as ?

1303

---

Explain the difference between pearlite and cementile ?

1172

---

When maximum discharge is obtained in nozzle ?

1053

---

Which theories of failure are used for ductile materials ?

1156

---

The amount of radiation emitted per scm per sec is called …. ?

1064

---

In some engines glycerine is used in place of water for cooling of engine. Why ?

1356

---

Which elements increase the corrosion resistance of steel ?

1168

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