Read More- Fluid Mechanics: Objective Questions
1. Eutectoid reaction occurs at-
A. 114 °C
B. 600 °C
C. 727 °C
D. 1493 °C
2. Machines tool guide-ways are usually hardness by-
A. Mar-tempering
B. Flame hardening
C. vacuum hardening
D. induction hardening
3. 18/8 stainless steel contains-
A. 18% nickel & 8% chromium
B. 18% chromium & 8% nickel
C. 18% tungsten & 8% chromium
D. 18% stainless & 8% chromium
4. Which one of the following features improve the fatigue strength of a metallic material-
A. Increasing the temperature
B. Scratching the surface
C. Over stressing
D. Under stressing
5. Gibbs phase rule is given by-
A. F = C + P
B. F = C – P + 2
C. F = C + P – 2
D. F = C – P – 2