Time Left - 15:00 mins
GATE 2022 ME: Strength of Materials Quiz-6
Attempt now to get your rank among 539 students!
Question 1
When the temperature of a fixed bar is increased, the stress induced in the bar is ______.
Question 2
A steel rod is heated from 30° to 80°C and free expansion of rod is allowed while heating. If coefficient of exposition is 1.2 × 10–5 per °C and E = 110 GN/m2, then thermal stress developed in material is.
Question 3
A circular cross section, linearly tapered (from d1 to d2) bar is rigidly held between two supports. When heated by amount T℃, the support reactions will be: (E=Young’s Modulus)
Question 4
Two rods, one of Aluminium and the other made of steel, having initial length l1 and l2 are connected to form a single rod of length l1 and l2. The coefficient of linear expansion for Aluminium (Al) and steel are αAl = 24 × 10-6/°C and αs = 12 × 10-6/°C respectively. If the length of each rod increases by same amount, when their temperature is raised by t°C, then find the ratio 
.
.Question 5
A steel bar 800 mm long and having 36 mm diameter is grinded to 35 mm diameter throughout its whole length. During grinding it is heated to 45°C above room temperature and then allowed to cool at room temp. It is clamped at both ends and distance between clamps is unchanged; the maximum stress developed in bar is _____. Assume αs = 12.5 × 10-6/°C and Elastic modulus (Es) = 200 GN/m2, Ambient temperature = 25°C
Question 6
For any given material, the thermal stress is function of:
1) Coefficient of linear function
2) Modulus of elasticity
3) Temperature rise
Which of the following is/are correct?
- 539 attempts
- 1 upvote
- 1 comment
Aug 12ESE & GATE ME
