RRB JE Printing Press — Solved Practice Question Bank

Q: Which printing process is best suited for very long, high-volume runs like magazines? Sol: Gravure (intaglio) printing — its high plate/cylinder cost is offset by excellent, consistent quality across very large print quantities. Q: Why is CMYK used for print instead of RGB? Sol: CMYK is a subtractive color model matching how ink absorbs (subtracts) light on a printed page, while RGB is an additive model matching how light is emitted/added on a screen — printing with RGB values directly would produce inaccurate, unpredictable colors. Q: What is the purpose of trapping in prepress work? Sol: To create a slight deliberate overlap between adjacent printed colors, preventing visible white gaps if the printing plates are very slightly misaligned during the press run.

Q: What does a higher GSM value indicate about a sheet of paper? Sol: A thicker, heavier, more rigid sheet — GSM (Grams per Square Meter) directly measures paper weight per unit area. Q: Why does folding paper against its grain direction risk cracking? Sol: Paper fibers align in one direction during manufacturing; folding across (against) that alignment breaks more fibers at the fold line, causing a rough or cracked fold, whereas folding with the grain bends between fibers more smoothly. Q: What is the purpose of "bleed" in a print design file? Sol: To extend background image/color slightly beyond the trim line, so that any minor trimming misalignment doesn't leave an unwanted white edge on the finished printed piece.