According to the ISO-A size series, what is the designation of a trimmed sheet with dimensions 297 mm × 420 mm?
A3
The ISO A-series paper sizes are based on a simple geometric progression. The ratio between the length and width of each size is \( \sqrt{2} \approx 1.414 \). Each subsequent size in the series is half the area of the previous size.
A0 has an area of 1 square meter, with dimensions of 841 mm × 1189 mm. A1 is half the area of A0, A2 is half the area of A1, and so on. This means the dimensions are progressively halved (in area).
Let's look at the dimensions given: 297 mm × 420 mm. We know that A4 is 210 mm × 297 mm. If we compare the provided dimensions (297 mm × 420 mm) with the A4 dimensions, we see that the shorter side of the given dimensions (297 mm) matches the longer side of A4. The longer side of the given dimensions is exactly double the shorter side of A4 (210mm x 2 = 420mm).
Therefore, doubling the shorter side of A4 and using the longer side of A4 as the shorter side of the next size leads to the A3 size (297 mm × 420 mm).
The correct answer is A3.
Similar Questions
Which of the following noise levels is considered potentially harmful to human health if experienced over extended periods?
Which of the following statements is/are true about Functional Dimensions (F) in engineering drawing?
Statement 1: Functional Dimensions are essential to the function of the component or space.
Statement 2: Functional Dimensions are typically shown without limits.
Statement 3: Functional Dimensions are only shown for reference purposes.A cube with a mass of 5.74 g occupies a volume of 1.2 cm³. The density (in g/cm³) expressed with the correct number of significant figures is ______.
According to BIS SP 46-2003, which of the following applications is correctly represented by a chain-thin line in engineering drawings?
Use of energy-efficient machineries in industrial settings primarily helps ______.
An ammeter has 20 divisions between 0 A and 2 A. The least count of ammeter is
Match the columns:
Engineering Applications Type of Engineering Drawings
A) Plan, front elevation of homes to be built, foundation drawings
P) Mechanical Engineering Drawings
B) Circuit diagrams and Electrical installation drawings
Q) Electronics Engineering drawings
C) PCB tracks drawings
R) Electrical Engineering drawings
D) Riveted joints and Welded joints
S) Civil Engineering drawingsWhich of the following is true?
Which of the following statements is/are true?
Statement 1: Heat conductors allow heat to pass through them easily.
Statement 2: All plastics are good conductors of heat.What does the symbol given below denote in a circuit diagram?
Important Questions from Miscellaneous - Physics
The force which makes a vehicle to stop when brake is applied is called __________.
- What does PCB stand for in electric circuits?
Which of the following noise levels is considered potentially harmful to human health if experienced over extended periods?
Which physicist was famous for the gold foil experiment?
Magnetic Meridian is a
