What is the difference between time fuze and impact fuze?

What is the difference between time fuze and impact fuze?

• A. Time fuze detonates on impact; impact fuze detonates after set time.
• B. Time fuze detonates after a set time; impact fuze detonates on impact with terrain or target.
• C. Time fuze detonates immediately; impact fuse detonates after impact.
• D. Time fuse and impact fuse are the same.

Answer: (B)

The core idea is how the fuse triggers the explosion. A time fuze uses a timer that you set before firing, so the round detonates after a definite delay—even if it hasn’t hit anything yet. This lets the shell explode at a chosen time and often at a desired height (airburst or delayed detonation). An impact fuze, by contrast, activates when the shell actually strikes terrain or a target, causing immediate detonation on contact. So the difference is timed delay versus detonation on impact. The correct description matches this: time fuzes detonate after a set time; impact fuzes detonate on impact. The other statements mix up the triggering or claim they’re the same.

The core idea is how the fuse triggers the explosion. A time fuze uses a timer that you set before firing, so the round detonates after a definite delay—even if it hasn’t hit anything yet. This lets the shell explode at a chosen time and often at a desired height (airburst or delayed detonation). An impact fuze, by contrast, activates when the shell actually strikes terrain or a target, causing immediate detonation on contact. So the difference is timed delay versus detonation on impact. The correct description matches this: time fuzes detonate after a set time; impact fuzes detonate on impact. The other statements mix up the triggering or claim they’re the same.