AME 10 End of Unit – SVE Study

AME 10 End of Unit Quiz

1 / 12

How does a controller block typically function in a control block diagram?

B) It compares the actual output with the desired set point and makes adjustments

D) It represents the sensor

A) It measures the system output

C) It generates the feedback signal

2 / 12

In a manually operated water level control system, which block directly affects the flow of water into or out of the tank?

B. Set Point

C. Feedback Path

A. Sensor

D. Manual Controller

3 / 12

What does the "Controller" block in an automatic closed-loop engine cooling system do?

C. Compares the actual engine temperature to the desired set point and adjusts the coolant flow accordingly

A. Measures the engine temperature

B. Displays the engine temperature

D. Manually adjusts the coolant flow

4 / 12

What is the function of a feedback loop in a control block diagram?

D) To provide a set point for the system

B) To measure the system output

C) To compare the output with the set point and adjust the system accordingly

A) To amplify the signal

5 / 12

What is the primary advantage of using a split range control system to manage the jacket water temperature in a main engine?

A) It allows for precise control by using separate controllers for heating and cooling.

C) It reduces the risk of overheating by prioritizing cooling over heating.

B) It simplifies the control system by using a single controller to manage both heating and cooling.

D) It increases the system’s complexity by requiring manual intervention for temperature adjustments.

6 / 12

Why might a split range control system be preferred over separate control systems for heating and cooling in marine engine applications?

C) It allows for independent manual control of heating and cooling.

A) It is less expensive to install and maintain.

D) It eliminates the need for a temperature sensor.

B) It provides smoother transitions between heating and cooling.

7 / 12

What could be a possible cause of the high jacket water temperature alarm, despite the header tank being full and both HT and SW pumps running in good condition?

A. Blocked heat exchanger

C. Faulty temperature sensor

D. Excessive engine load

B. Low fuel pressure

8 / 12

What is the purpose of the "Set Point" block in the control block diagram?

D. To adjust the water flow

B. To represent the water tank

C. To provide the desired water level that the operator aims to maintain

A. To measure the actual water level

9 / 12

What is the typical effect of a malfunctioning temperature sensor in a closed-loop engine cooling control system?

C. Increased coolant flow

B. Inaccurate temperature measurements, leading to potential overheating or overcooling

D. Reduced need for coolant

A. Improved engine performance

10 / 12

Explain the term "failset" in a control system and provide TWO examples of its application.

D) A failset is a mechanism that accelerates system operations during a failure. Examples include high-speed processors and fast-acting sensors.

B) A failset is a state where a system continues to operate at a reduced capacity when a component fails. Examples include partial valve operation and limited control input.

C) A failset is a predetermined state that a system moves to when it fails to operate correctly. Examples include valves that default to open or close positions and motor-driven actuators that move to a safe position.

A) A failset is a configuration that enhances system performance during a failure. Examples include increased power output and rapid response modes.

11 / 12

2. In a control block diagram, what is the purpose of the arrows or lines?

C) To represent feedback loops

A) To indicate the control signals

B) To show the connection between components

D) To display the gain of the system

12 / 12

In a split range control system, what occurs when the controller's output signal reaches the upper range?

B) Both the heating and cooling valves close completely.

D) The system activates an alarm due to a high-temperature condition.

A) The heating valve closes, and the cooling valve begins to open.

C) The cooling valve closes, and the heating valve fully opens.

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