Applied Mechanics and Design [GATE (Graduate Aptitude Test in Engineering) Mechanical Engineering]: Questions 46 - 49 of 82

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Question 46

Applied Mechanics and Design
Stress and Strain
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Appeared in Year: 2019

Question

Numeric Answer▾

During a high cycle fatigue test, a metallic specimen is subjected to cyclic loading with a mean stress of + 140 MPa, and a minimum stress of -70 MPa. The R-ratio (minimum stress to maximum stress) for this cyclic loading is ________ (round off to one decimal place)

Question 47

Applied Mechanics and Design
Gear Trains and Flywheels

Appeared in Year: 2019

Question

MCQ▾

A spur gear with full depth teeth is transmitting 20 kW at 200 rad/s. The pitch circle diameter of the gear is 100 mm. The magnitude of the force applied on the gear in the radial direction is

Choices

Choice (4)Response

a.

0.36 kN

b.

2.78 kN

c.

0.73 kN

d.

1.39 kN

Question 48

Applied Mechanics and Design
Stress and Strain

Appeared in Year: 2019

Question

Numeric Answer▾

At a critical point in a component, the state of stress is given as and all other stress components are zero. the yield strength of the material is 468 MPa. The factor of safety on the basis of maximum shear stress theory is ________ (round off to one decimal place) .

Question 49

Applied Mechanics and Design
Stress and Strain

Appeared in Year: 2019

Question

Numeric Answer▾

A cylindrical rod of diameter 10 mm and length 1.0 m is fixed at one end. The other end is twisted by an angle of by applying torque. If the maximum shear strain in the rod is , then p is equal to ________

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