MDE 7 Q2

1 / 9

Oil Pressure Cut-Out

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

A) Allows the engine to run regardless of oil pressure

D) Increases engine speed to manage oil pressure

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

B) Activates an external pump to boost oil pressure

2 / 9

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

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

D) To adjust the fuel injection timing

A) To prevent fuel contamination

B) To automatically refuel the engine

3 / 9

Safety Cut-Outs/Trips for Diesel Engines

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

D) To adjust the intake air flow

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

C) To monitor the engine oil temperature

A) To control the fuel injection rate

4 / 9

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

B) Fuel filter clogging trip

D) Engine vibration sensor

C) Oil temperature sensor

A) Exhaust temperature trip

5 / 9

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

D) It activates an external cooling fan

C) It adjusts the engine speed to manage temperature

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

A) It increases fuel supply to compensate for temperature changes

6 / 9

Overspeed Trip

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

C) Increases engine speed to manage high RPMs

D) Deactivates the fuel pump to reduce speed

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

A) Activates a warning alarm when speed limits are exceeded

7 / 9

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

A) Provides additional cooling when temperatures rise

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

8 / 9

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

C) Low coolant level sensor

B) High-temperature trip

D) High exhaust temperature trip

A) Oil pressure cut-out

9 / 9

Low Fuel Level Cut-Out

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

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

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

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

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

Your score is