MDE Unit 17 Fluid Couplings Flashcards

Question 3:
What is a likely consequence of angular misalignment in a fluid coupling system in terms of efficiency?

B) Decreased operational efficiency due to uneven torque distribution

Question:
With reference to fluid couplings, what is the effect of increasing oil flow between the impellors?

C) Enhanced torque transmission and reduced slip

Question 1:
With reference to fluid couplings, what is a common effect of angular misalignment on the coupling performance?

D) Excessive vibration and potential damage

Question 4:
To correct angular misalignment in a fluid coupling system, what is a recommended action?

B) Adjust the alignment of the shafts to the manufacturer’s specifications

Question 2:
How does angular misalignment impact the life expectancy of a fluid coupling?

C) It decreases the life expectancy due to increased wear and tear

Question 4:
What is the primary function of the coupling fluid in a fluid coupling?

B) To transfer torque between the engine and the gearbox

Question 1:
With reference to fluid couplings for the main propulsion shaft, what is one advantage of using a fluid coupling over a mechanical clutch?

B) Smooth torque transmission without shock loads

Question 1:
With reference to fluid couplings, what is the primary effect of increased oil temperature on the performance of the coupling?

C) Reduced viscosity and potential slippage

Question 1:
Which of the following is a primary component of a fluid coupling used to connect an engine to a gearbox?

B) Impeller

Question 2:
What is a potential consequence of increased oil temperature in a fluid coupling system?

C) Greater risk of fluid overheating and damage

Question 3:
How might increased oil temperature affect the fluid coupling's torque transmission capability?

B) It will decrease torque transmission capability due to reduced fluid viscosity

Question 2:
With reference to fluid couplings for the main propulsion shaft, which of the following is an advantage in terms of engine protection?

C) Automatic slip during overload conditions

Question 3:
With reference to fluid couplings for the main propulsion shaft, what is an advantage regarding vibration damping?

B) Enhanced vibration damping capability

Question 4:
To mitigate the effects of high oil temperature in a fluid coupling system, what action might be taken?

C) Improve the cooling system to manage oil temperature

Question 3:
Which component in a fluid coupling helps to maintain a controlled amount of coupling fluid and manage its flow?

A) Stator

Question 5:
What is a common feature of the housing in a fluid coupling?

B) It provides a sealed environment for the coupling fluid

Question 2:
In a fluid coupling, what role does the turbine play?

C) To receive fluid flow from the impeller and transmit torque to the gearbox

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