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

1008

---

Why pistons are usually dished at top ?

1220

---

What for admirality brass used ?

1064

---

What are killed steels and what for these are used ?

1176

---

Explain nuclear reactor?

1124

---

Why boiler is purged everytime before starting firing of fuel ?

1085

---

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

1047

---

What is bauschinger effect ?

1070

---

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

1261

---

Explain the difference between pearlite and cementile ?

1121

---

When maximum discharge is obtained in nozzle ?

994

---

Which theories of failure are used for ductile materials ?

1102

---

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

1013

---

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

1297

---

Which elements increase the corrosion resistance of steel ?

1107

---