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

1108

---

Why pistons are usually dished at top ?

1330

---

What for admirality brass used ?

1163

---

What are killed steels and what for these are used ?

1306

---

Explain nuclear reactor?

1235

---

Why boiler is purged everytime before starting firing of fuel ?

1178

---

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

1161

---

What is bauschinger effect ?

1173

---

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

1350

---

Explain the difference between pearlite and cementile ?

1216

---

When maximum discharge is obtained in nozzle ?

1111

---

Which theories of failure are used for ductile materials ?

1191

---

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

1122

---

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

1405

---

Which elements increase the corrosion resistance of steel ?

1225

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