Engineering Concepts Flashcard for Grade 9

Front

What is the primary function of a gear in a mechanical system?

Back

To transmit torque

Front

Which of the following is a characteristic of a parallel circuit? The current is the same through all components, The voltage is the same across all components, The resistance is the same across all components, The power is the same across all components

Back

The voltage is the same across all components

Front

In the engineering design process, what is the purpose of the "Define the Problem" step?

Back

To identify the needs and constraints

Front

Calculate the mechanical advantage of a lever with an effort arm of 4 meters and a load arm of 2 meters.

Back

The mechanical advantage (MA) is calculated as the ratio of the length of the effort arm to the length of the load arm, which is $MA = \frac{effort\ arm}{load\ arm} = \frac{4}{2} = 2$.

Front

If a resistor of 5 ohms is connected in series with a 10-ohm resistor, what is the total resistance?

Back

15 ohms

Front

During the engineering design process, why is it important to test a prototype?

Back

To identify potential improvements

Front

A mechanical system uses a pulley to lift a load. If the input force is 50 N and the output force is 200 N, what is the mechanical advantage of the pulley system?

Back

4

Front

Analyze the following circuit: A 12V battery is connected in series with a 4-ohm and a 6-ohm resistor. What is the current flowing through the circuit?

Back

1 A

Front

In the context of the engineering design process, how would you evaluate the effectiveness of a solution? Options: By comparing it to the initial problem statement, By checking if it uses the least amount of materials, By ensuring it is the most expensive option, By seeing if it looks aesthetically pleasing

Back

By comparing it to the initial problem statement

Front

What is the function of a capacitor in an electrical circuit?

Back

To store electrical energy