How a Can Opener Works / āĻā§āύ āĻāĻĒā§āύāĻžā§° āĻā§āύā§āĻā§ āĻāĻžāĻŽ āĻā§°ā§
Working Steps / āϧāĻžāĻĒā§ āϧāĻžāĻĒā§ āĻāĻžāĻŽ āĻā§°āĻžā§° āĻĒā§ā§°āĻā§ā§°āĻŋāϝāĻŧāĻž
1. Can opener placed on rim : Place the can opener on the rim of the can. : āĻā§āύ⧰ āĻāĻŋāύāĻžā§°āϤ āĻāĻĒā§āύāĻžā§°āĻā§ ā§°āĻžāĻāĻž āĻšāϝāĻŧāĨ¤
2. Handles squeezed to grip : Squeeze the handles to grip the lid tightly. : āĻšā§āĻŖā§āĻĄā§āϞ āĻāĻŋāĻĒāĻŋ āĻĸāĻžāĻāύāĻŋāĻā§ āĻŽāĻāĻŦā§āϤāĻā§ āϧ⧰āĻž āĻšāϝāĻŧāĨ¤

3. User turns the crank : Turn the crank (handle). : āĻāĻāĻāĻžā§°ā§ āĻā§ā§°ā§āĻāĻāĻā§ āĻā§ā§°āĻžāϝāĻŧāĨ¤
4. Gear wheel moves along the rim : The gear wheel moves around the can edge. : āĻāĻŋāϝāĻŧāĻžā§° āĻāĻžāĻāĻā§ āĻā§āύ⧰ āĻāĻŋāύāĻžā§°ā§° āĻāĻžāώā§ā§°ā§ āĻā§ā§°ā§āĨ¤
5. Cutting wheel slices the lid : Sharp cutting wheel cuts the metal lid. : āϧāĻžā§°āĻžāϞ⧠āĻāĻžāĻāĻŋāĻ āĻāĻžāĻāĻā§ā§ąā§ āϧāĻžāϤā§ā§° āĻĸāĻžāĻāύāĻŋ āĻāĻžāĻāĻŋ āϝāĻžāϝāĻŧāĨ¤
6. Lid separates from the can : The lid comes off easily. : āĻĸāĻžāĻāύāĻŋāĻā§ āϏāĻšāĻā§ āĻāĻāϤ⧰āĻžāĻ āϝāĻžāϝāĻŧāĨ¤
Key Concept / āĻŽā§āĻā§āϝ āϧāĻžā§°āĻŖāĻž
- Uses gear motion + cutting wheel : āĻāĻŋāϝāĻŧāĻžā§° āĻāϤāĻŋ + āĻāĻžāĻāĻŋāĻ āĻāĻžāĻ āĻŦā§āĻ¯ā§ąāĻšāĻžā§° āĻā§°ā§
- Gear helps movement, cutting wheel cuts metal : āĻāĻŋāϝāĻŧāĻžā§°ā§ āĻāϤāĻŋ āĻĻāĻŋāϝāĻŧā§, āĻāĻžāĻāĻŋāĻ āĻāĻžāĻāĻā§ā§ąā§ āĻāĻžāĻāĻŋ āĻĻāĻŋāϝāĻŧā§
Simple Summary / āϏāĻšāĻ āϏāĻžā§°āĻžāĻāĻļ
- Grip → Turn → Gear moves → Lid cuts → Open
- āϧ⧰āĻž → āĻā§ā§°ā§ā§ąāĻž → āĻāĻŋāϝāĻŧāĻžā§° āĻā§ā§°ā§ → āĻāĻžāĻā§ → āĻā§āϞāĻŋ āϝāĻžāϝāĻŧ
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Can Opener – 10 MCQs
Q1. A can opener is used to: : āĻā§āύ āĻāĻĒā§āύāĻžā§° āĻāĻŋāĻšā§° āĻŦāĻžāĻŦā§ āĻŦā§āĻ¯ā§ąāĻšāĻžā§° āĻšāϝāĻŧ ?(a) Cut wood (b) Open cans (c) Break glass (d) Heat food
Ans: (b) Open cans
Explanation: A can opener is used to open metal cans. : āĻ āϧāĻžāϤā§ā§° āĻā§āύ āĻā§āϞāĻžā§° āĻŦāĻžāĻŦā§ āĻŦā§āĻ¯ā§ąāĻšāĻžā§° āĻšāϝāĻŧāĨ¤
Q2. The can opener is placed on the: : āĻā§āύ āĻāĻĒā§āύāĻžā§° āĻ’āϤ ā§°āĻāĻž āĻšāϝāĻŧ?(a) Bottom (b) Side (c) Rim (d) Inside
Ans: (c) Rim
Explanation: It is placed on the rim of the can. : āĻā§āύ⧰ āĻāĻŋāύāĻžā§°āϤ ā§°āĻžāĻāĻž āĻšāϝāĻŧāĨ¤
Q3. Handles are squeezed to: āĻšā§āĻŖā§āĻĄā§āϞ āĻāĻŋāĻĒāĻž āĻšāϝāĻŧ āĻāĻŋāϝāĻŧ?(a) Heat can (b) Grip lid (c) Break can (d) Clean lid
Ans: (b) Grip lid
Explanation: It helps to hold the lid tightly. : āĻĸāĻžāĻāύāĻŋ āĻŽāĻāĻŦā§āϤāĻā§ āϧ⧰ā§āĨ¤
Q4. The crank is used to: āĻā§ā§°ā§āĻāĻ āĻāĻŋāĻšā§° āĻŦāĻžāĻŦā§ āĻŦā§āĻ¯ā§ąāĻšāĻžā§° āĻšāϝāĻŧ ?(a) Cut directly (b) Turn mechanism (c) Hold can (d) Stop motion
Ans: (b) Turn mechanism
Explanation: Turning crank moves gears and cutter. : āĻā§ā§°ā§āĻāĻ āĻā§ā§°āĻžāϞ⧠āĻāĻŋāϝāĻŧāĻžā§° āĻā§°ā§ āĻāĻžāĻāĻžā§° āĻāϞā§āĨ¤
Q5. The gear wheel helps to: āĻāĻŋāϝāĻŧāĻžā§° āĻāĻžāĻāĻā§ā§ąā§ āĻāĻŋ āϏāĻšāĻžāϝāĻŧ āĻā§°ā§ ?(a) Heat lid (b) Move along rim (c) Stop cutting (d) Store energy
Ans: (b) Move along rim
Explanation: It moves around the can edge. : āĻā§āύ⧰ āĻāĻŋāύāĻžā§°ā§° āĻāĻžāώā§ā§°ā§ āĻā§ā§°ā§āĨ¤
Q6. The cutting wheel is: āĻāĻžāĻāĻŋāĻ āĻāĻžāĻāĻā§ āĻā§āύā§āĻā§ā§ąāĻž ?(a) Soft (b) Sharp (c) Round only (d) Plastic
Ans: (b) Sharp
Explanation: It must be sharp to cut metal. : āϧāĻžāϤ⧠āĻāĻžāĻāĻŋāĻŦāϞ⧠āϧāĻžā§°āĻžāϞ⧠āϞāĻžāĻā§āĨ¤
Q7. The cutting wheel cuts: āĻāĻžāĻāĻŋāĻ āĻāĻžāĻāĻā§ā§ąā§ āĻāĻŋ āĻāĻžāĻāĻŋ āϝāĻžāϝāĻŧ?(a) Can body (b) Lid (c) Handle (d) Gear
Ans: (b) Lid
Explanation: It slices the lid of the can. : āĻĸāĻžāĻāύāĻŋ āĻāĻžāĻāĻŋ āϝāĻžāϝāĻŧāĨ¤
Q8. After cutting, the lid: āĻāĻžāĻāĻžā§° āĻĒāĻŋāĻāϤ āĻĸāĻžāĻāύāĻŋ āĻāĻŋ āĻšāϝāĻŧ?(a) Sticks (b) Breaks (c) Separates (d) Melts
Ans: (c) Separates
Explanation: Lid separates from the can. : āĻĸāĻžāĻāύāĻŋ āĻāĻāϤ⧰āĻžāĻ āϝāĻžāϝāĻŧāĨ¤
Q9. A can opener works using: āĻā§āύ āĻāĻĒā§āύāĻžā§° āĻāĻŋāĻšā§ā§°ā§ āĻāĻžāĻŽ āĻā§°ā§?(a) Heat (b) Gear motion (c) Magnet (d) Light
Ans: (b) Gear motion
Explanation: It uses gears and cutting wheel. : āĻāĻŋāϝāĻŧāĻžā§° āĻā§°ā§ āĻāĻžāĻāĻŋāĻ āĻŦā§āĻ¯ā§ąāϏā§āĻĨāĻž āĻŦā§āĻ¯ā§ąāĻšāĻžā§° āĻā§°ā§āĨ¤
Q10. Main purpose of a can opener is: āĻā§āύ āĻāĻĒā§āύāĻžā§°ā§° āĻŽā§āĻā§āϝ āĻāĻĻā§āĻĻā§āĻļā§āϝ āĻāĻŋ?(a) Decorate can (b) Open can safely (c) Heat can (d) Clean can
Ans: (b) Open can safely
Explanation: It helps open cans easily and safely. : āϏāĻšāĻā§ āĻā§°ā§ āύāĻŋā§°āĻžāĻĒāĻĻā§ āĻā§āύ āĻā§āϞā§āĨ¤