Download App

Machines — Physics STD 10 — Question

ICSE BoardEnglish MediumSTD 10PhysicsMachines1 Mark
MCQ
State the incorrect statement : ________ .
  • A
    A machine always has the efficiency less than 100%
  • B
    The mechanical advantage of a machine can be less than 1.
  • C
    A machine can be used as speed multiplier.
  • ✓
    A machine can have the mechanical advantage greater than the velocity ratio.
✓

Answer

Correct option: D.
A machine can have the mechanical advantage greater than the velocity ratio.
A machine can have a mechanical advantage greater than the velocity ratio.
Reason: If the mechanical advantage of a machine is greater than its velocity ratio, then it would mean that the efficiency of a machine is more than 100%, which is practically not possible.

Need a full question paper?

Generate a complete, print-ready paper with questions like this in minutes — across 16+ boards, with answer keys.

Start Generating Free

Explore more

More "MCQ" from Machines→Machines — all question types→Physics STD 10 question papers→ICSE Board STD 10 question papers→ICSE Board question paper generator→

Similar questions

A villager uses a single fixed pulley while a person in urban areas uses the combination of single fixed and single movable pulley. Which out of the two are more effective?
→
As per the Right Hand Thumb Rule, if you hold the current carrying conductor in your right hand such that the thumb point is in the direction of the current, then which finger/fingers will indicate the direction of magnetic field?
→
Calculate the length of arm of a couple, if a force of 13 N produces a moment of couple of 14.3 Nm.
→
Tesla $(T)$ is the unit of :
→
The physical quantity that will remain unchanged after reflection of sound wave is:
→
What characteristic is typical of Class $\Pi$ levers regarding mechanical advantage (M.A.)?
→
The moon revolving around the earth is in
→
If the mechanical advantage of a lever is 4 and the efficiency of the system is 2 . Calculate the velocity ratio of the system.
→
When sound gets reflected from a surface:
→
If a machine acts as a force multiplier, its velocity ratio is :
→