1.
The flat base of the head.
Correct Answer
B. Bed
Explanation
The flat base of the head is the correct answer because it is the part of the sewing machine that provides a stable surface for the fabric to rest on while sewing. The bed is usually made of metal and is located underneath the needle and presser foot. It helps to support the fabric and keep it in place while the needle and feed dog move the fabric through the machine. Without a flat and stable bed, it would be difficult to sew accurately and smoothly.
2.
Holds the bobbin.
Correct Answer
C. Bobbin case or shuttle
Explanation
The correct answer is "Bobbin case or shuttle." The bobbin case or shuttle is a part of a sewing machine that holds the bobbin. It is responsible for controlling the thread tension and ensuring smooth and even stitching. This component is essential for the proper functioning of the sewing machine as it holds the bobbin securely in place while the upper thread interlocks with it to form stitches. Without the bobbin case or shuttle, the sewing machine would not be able to create stitches effectively.
3.
Regulates the length of the stitch.
Correct Answer
C. Stitch Regulator
Explanation
The stitch regulator is responsible for regulating the length of the stitch. It ensures that each stitch is the same length, resulting in a consistent and even stitch pattern. This is important in sewing as it helps to maintain the integrity and appearance of the fabric being stitched. The stitch regulator can be adjusted to create shorter or longer stitches depending on the desired outcome.
4.
Keeps the thread in position.
Correct Answer
A. Thread Guide
Explanation
The thread guide is responsible for keeping the thread in position while sewing. It helps guide the thread through the machine, ensuring that it follows the correct path and does not get tangled or caught on any other components. Without the thread guide, the thread may not be properly positioned, leading to stitching issues or thread breakage. Therefore, the thread guide is an essential part of the sewing machine to maintain the correct thread path and ensure smooth sewing.
5.
Lowers and raises the presser foot.
Correct Answer
A. Presser bar lifter
Explanation
The correct answer is "Presser bar lifter" because it is the component that lowers and raises the presser foot. The presser foot is an essential part of a sewing machine that holds the fabric in place while stitching. The presser bar lifter is responsible for controlling the up and down movement of the presser foot, allowing the user to adjust the pressure applied to the fabric. Without the presser bar lifter, it would be impossible to properly position and secure the fabric for sewing.
6.
Regulates the tightness or looseness of the thread.
Correct Answer
A. Thread tension regulator
Explanation
The thread tension regulator is responsible for controlling the tightness or looseness of the thread while sewing. It is an essential component of a sewing machine as it ensures that the stitches are formed correctly and evenly. By adjusting the tension regulator, the user can achieve the desired tension for different types of fabrics and sewing techniques. This helps in preventing loose or puckered stitches and ensures a professional finish to the sewing project.
7.
Spool for the lower thread.
Correct Answer
B. Bobbin
Explanation
The correct answer is "Bobbin" because a bobbin is a small spool that holds the lower thread in a sewing machine. It is placed in the bobbin case and is essential for the proper functioning of the machine. Without a bobbin, the lower thread would not be able to feed through the machine, resulting in an inability to create stitches. Therefore, the bobbin is the correct answer in this context.
8.
Winds the thread to the bobbin.
Correct Answer
C. Bobbin winder
Explanation
The correct answer is "Bobbin winder." The bobbin winder is the part of a sewing machine that winds the thread onto the bobbin. It is responsible for creating a tight and even thread on the bobbin, which is necessary for smooth and accurate stitching. Without a functioning bobbin winder, it would be difficult to properly load the bobbin with thread and use the sewing machine effectively.
9.
Holds the spool of the thread.
Correct Answer
D. Spool pin
Explanation
The spool pin is the correct answer because it is the part that holds the spool of thread. The spool pin is typically located on the top of a sewing machine and is used to secure the spool of thread in place while sewing. Without the spool pin, the thread would not be able to unwind properly and feed through the machine, making it an essential component for sewing.
10.
Moves the thread up and down with each other.
Correct Answer
A. Thread take up lever
Explanation
The thread take up lever is responsible for moving the thread up and down with each stitch. It helps in creating the proper tension in the thread and ensures smooth and even stitching. By moving the thread up and down, the thread take up lever ensures that the thread is properly fed into the machine and that the stitches are formed correctly.
11.
The cord connecting the upper and lower wheel.
Correct Answer
A. Belt
Explanation
The correct answer is "Belt." In this context, a belt is a flexible cord or strap that connects the upper and lower wheel. It is commonly used to transmit power or motion between two rotating shafts.
12.
To make the machine run, turn the hand wheel toward you then start sewing.
Correct Answer
C. Hand wheel
Explanation
To make the machine run, the hand wheel needs to be turned towards you. This action helps to engage the machine's mechanism and initiate the sewing process. By turning the hand wheel, you are manually powering the machine and allowing it to operate smoothly. This step is crucial before starting sewing as it sets the machine in motion and prepares it for stitching.
13.
Covers the part where the bobbin shuttle is placed.
Correct Answer
B. Slide plate
Explanation
The slide plate is the correct answer because it covers the part where the bobbin shuttle is placed. It is a plate that slides open and closed to allow access to the bobbin area. By sliding the plate open, the user can easily insert or remove the bobbin shuttle. This plate helps to protect the bobbin area from dust and debris when not in use, ensuring smooth operation of the sewing machine.
14.
Covers the feed dog and other parts underneath.
Correct Answer
B. Throat plate
Explanation
The throat plate is the correct answer because it covers the feed dog and other parts underneath. The throat plate is a metal plate that sits beneath the needle and presser foot, and it has a small hole through which the needle passes. It helps to guide the fabric and prevent it from being pulled down into the machine. By covering the feed dog and other parts, the throat plate ensures that the fabric is properly supported and moves smoothly during the sewing process.
15.
Moves the fabric while sewing.
Correct Answer
D. Feed dog
Explanation
The feed dog is a mechanism in a sewing machine that moves the fabric forward and backward while sewing. It consists of small metal teeth that grip the fabric and guide it through the machine, ensuring even stitching and preventing the fabric from bunching or stretching. Without the feed dog, the fabric would not be properly fed through the machine, resulting in uneven stitches or difficulty in sewing. Therefore, the feed dog is responsible for moving the fabric while sewing.
16.
Holds the fabric in place while sewing.
Correct Answer
A. Presser foot
Explanation
The presser foot is a part of a sewing machine that holds the fabric in place while sewing. It applies pressure to the fabric, preventing it from shifting or bunching up during the sewing process. This ensures that the stitches are straight and even. The presser foot can be adjusted to accommodate different types of fabrics and sewing techniques. It is an essential component for achieving accurate and professional-looking sewing results.
17.
Holds the needle. Its upward and downward motion brings the needle and thread through the cloth in every stitch.
Correct Answer
B. Needle bar
Explanation
The needle bar is responsible for holding the needle and controlling its upward and downward motion. This motion allows the needle and thread to pass through the cloth and create stitches. Without the needle bar, the needle would not be able to move and no stitching could be done.
18.
The connecting rod of the crank to the treadle.
Correct Answer
B. Pitman rod
Explanation
The Pitman rod is the correct answer because it connects the crank to the treadle. The connecting rod is responsible for transmitting motion and power from the crank to the treadle, allowing the machine to operate. The thread guide, presser foot, and crank are not directly involved in connecting the crank to the treadle, making them incorrect options.
19.
The bigger wheel that moves with the hand wheel through their connecting belt.
Correct Answer
C. Band wheel
Explanation
The band wheel is the correct answer because it is described as the bigger wheel that moves with the hand wheel through their connecting belt. This indicates that the band wheel is connected to the hand wheel through a belt and moves in conjunction with it. Therefore, the band wheel fits the description given in the question.
20.
Guides the belt to its place in the band wheel.
Correct Answer
B. Belt shifter
Explanation
The belt shifter is the correct answer because it guides the belt to its place in the band wheel. It is responsible for ensuring that the belt is properly aligned and positioned on the band wheel, allowing for smooth and efficient operation. The other options listed, such as the crank and slide plate, do not have a direct role in guiding the belt to its place in the band wheel.
21.
Turns the band wheel.
Correct Answer
A. Crank
Explanation
The crank is a mechanical device that converts rotary motion into reciprocating motion. In this context, the crank is responsible for turning the band wheel. The band wheel is likely a component of a larger machine or system that requires rotational movement to function properly. The hand wheel and belt shifter are not directly related to turning the band wheel, making them incorrect options.