MDE 7 Q2

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Question 2: Which safety cut-out is designed to prevent engine operation in the event of low oil pressure?

B) High-temperature trip

A) Oil pressure cut-out

C) Low coolant level sensor

D) High exhaust temperature trip

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Question 5: Which safety cut-out is specifically designed to detect and prevent excessive exhaust gas temperatures?

C) Oil temperature sensor

B) Fuel filter clogging trip

D) Engine vibration sensor

A) Exhaust temperature trip

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High Coolant Temperature Trip

Question 3: How does a high coolant temperature trip function in a diesel engine?

D) Allows the engine to continue operating at higher temperatures

B) Activates a cooling fan to lower temperature

C) Senses coolant temperature and halts engine operation when overheating occurs

A) Provides additional cooling when temperatures rise

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Low Fuel Level Cut-Out

Question 4: How does a low fuel level cut-out function in a diesel engine?

C) Allows the engine to continue operating until the fuel level is critically low

D) Activates an alarm to notify the operator of low fuel levels

B) Stops the engine when the fuel level drops below a certain threshold

A) Automatically refuels the engine when the fuel level is low

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Oil Pressure Cut-Out

Question 2: How does an oil pressure cut-out function in a diesel engine?

B) Activates an external pump to boost oil pressure

C) Monitors oil pressure and stops the engine when pressure is too low

A) Allows the engine to run regardless of oil pressure

D) Increases engine speed to manage oil pressure

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Overspeed Trip

Question 1: How does an overspeed trip function in a diesel engine?

B) Uses centrifugal force to activate the cut-out when speed exceeds the limit

D) Deactivates the fuel pump to reduce speed

C) Increases engine speed to manage high RPMs

A) Activates a warning alarm when speed limits are exceeded

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Safety Cut-Outs/Trips for Diesel Engines

Question 1: What is the primary function of an overspeed trip in a diesel engine?

B) To stop the engine if it exceeds a specified speed

A) To control the fuel injection rate

D) To adjust the intake air flow

C) To monitor the engine oil temperature

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Question 4: What is the purpose of a low fuel level cut-out in a diesel engine?

B) To automatically refuel the engine

D) To adjust the fuel injection timing

A) To prevent fuel contamination

C) To stop the engine if the fuel level falls below a certain point

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Question 3: What does a high coolant temperature trip do in a diesel engine?

A) It increases fuel supply to compensate for temperature changes

B) It shuts down the engine if the coolant temperature exceeds a set threshold

C) It adjusts the engine speed to manage temperature

D) It activates an external cooling fan

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