1
GATE ME 2024
MCQ (Single Correct Answer)
+1
-0.33

For a ball bearing, the fatigue life in millions of revolutions is given by $L = \left(\frac{C}{P}\right)^n$, where $P$ is the constant applied load and $C$ is the basic dynamic load rating. Which one of the following statements is TRUE?

A

$n = 3$, assuming that the inner racing is fixed and outer racing is revolving

B

$n = 1/3$, assuming that the inner racing is fixed and outer racing is revolving

C

$n = 3$, assuming that the outer racing is fixed and inner racing is revolving

D

$n = 1/3$, assuming that the outer racing is fixed and inner racing is revolving

2
GATE ME 2024
MCQ (Single Correct Answer)
+1
-0.33

Which one of the following failure theories is the most conservative design approach against fatigue failure?

A

Soderberg line

B

Modified Goodman line

C

Gerber line

D

Yield line

3
GATE ME 2024
Numerical
+2
-0

A solid massless cylindrical member of 50 mm diameter is rigidly attached at one end, and is subjected to an axial force $P = 100$ kN and a torque $T = 600$ N.m at the other end as shown. Assume that the axis of the cylinder is normal to the support.

Considering distortion energy theory with allowable yield stress as $300$ MPa, the factor of safety in the design is _____ (rounded off to 1 decimal place).

GATE ME 2024 Machine Design - Design of Brakes and Clutches Question 6 English
Your input ____
4
GATE ME 2024
Numerical
+2
-0

A band brake shown in the figure has a coefficient of friction of 0.3. The band can take a maximum force of 1.5 kN. The maximum braking force (F) that can be safely applied is _______ N (rounded off to the nearest integer).

GATE ME 2024 Machine Design - Design of Brakes and Clutches Question 5 English
Your input ____
EXAM MAP