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# Test: Couplings - 2

## 10 Questions MCQ Test Machine Design | Test: Couplings - 2

Description
This mock test of Test: Couplings - 2 for Mechanical Engineering helps you for every Mechanical Engineering entrance exam. This contains 10 Multiple Choice Questions for Mechanical Engineering Test: Couplings - 2 (mcq) to study with solutions a complete question bank. The solved questions answers in this Test: Couplings - 2 quiz give you a good mix of easy questions and tough questions. Mechanical Engineering students definitely take this Test: Couplings - 2 exercise for a better result in the exam. You can find other Test: Couplings - 2 extra questions, long questions & short questions for Mechanical Engineering on EduRev as well by searching above.
QUESTION: 1

### Clamp coupling employ bolts.

Solution:

Explanation: The two halves of sleeve are clamped together by bolts.

QUESTION: 2

### Entire torque is transmitted by friction in the clamp coupling.

Solution:

Explanation: Some torque is transferred by friction and some by key.

QUESTION: 3

### Does shaft has to be shifted i axial direction to remove clamp coupling.

Solution:

Explanation: Clamp coupling unlike muff coupling is easily removed without shifting the shaft in axial direction.

QUESTION: 4

If shaft diameter is 40mm, calculate the diameter of sleeves in clamp coupling.

Solution:

Explanation: Dia=2.5d.

QUESTION: 5

If shaft diameter is 40mm, calculate the length of sleeves in clamp coupling.

Solution:
QUESTION: 6

If 8 bolts are emplaced in a clamp coupling with shaft diameter 80mm d, calculate the tensile force on each bolt if coefficient of friction is 0.3 and torque transmitted is 4000N-m.

Solution:
QUESTION: 7

If 8 bolts are emplaced in a clamp coupling with shaft diameter 80mm d, calculate the diameter of each bolt if coefficient of friction is 0.3 and torque transmitted is 4000N-m. Permissible tensile stress is 80N/mm².

Solution:
QUESTION: 8

Power is transmitted by only in rigid flange coupling.

Solution:

Explanation: Power is transmitted by key as well as bolts.

QUESTION: 9

If shaft diameter is 60mm, how many bolts are recommended for rigid flange coupling?

Solution:

Explanation: If shaft diameter is between 40mm and 100mm, 4 bolts are used.

QUESTION: 10

Determine the diameter of the bolts used in rigid flange coupling if transmitted torque is 270N-m, pitch circle diameter=125mm and four bolts are emplace in the coupling. Permissible shear stress in the bolts is 70N/mm².

Solution:

Explanation: d²=8M/πDNτ.