1) Mechanical Advantage (MA) is defined as.. a) Effort ÷ Load b) Load ÷ Effort c) Load × Effort d) Load – Effort 2) Velocity Ratio (VR) is given by.. a) Distance moved by load ÷ distance moved by effort b) Distance moved by effort ÷ distance moved by load c) Load ÷ effort d) Effort ÷ load 3) Which factor affects MA but not VR? a) Size of the machine b) Material of rope c) Shape of pulleys d) Friction 4) Efficiency is calculated as: a) VR/MA ×100% b) MA/VR ×100% c) MA × V𝑅 ×100% d) 𝑀A × VR/100% e) 𝐴 f) × 5) Which statement is TRUE for an ideal machine? a) MA < VR b) Efficiency < 100% c) MA > VR d) MA = VR 6) In a real machine, friction causes.. a) MA to be greater than VR b) VR to increase c) MA to be less than VR d) MA and VR to be equal 7) The term that measures the force multiplication of a machine is.. a) Velocity Ratio b) Efficiency c) Mechanical Advantage d) Power 8) Which of these is independent of friction? a) MA b) Output work c) Efficiency d) VR 9) Which unit is used for MA? a) Newton b) m/s c) Joule d) No unit 10) MA of a machine can be increased by a) Reducing friction b) Reducing load c) Increasing effort d) Increasing VR

Explain the terms of Mechanical advantage (MA), Velocity Ratio (VR) and Efficiency

สั่งพิมพ์
ฝัง

ลีดเดอร์บอร์ด

สไตล์ภาพ

ตัวเลือก

สลับแม่แบบ

คืนค่าการบันทึกอัตโนมัติ: ใช่ไหม