As shown in the illustrated solid-state...

Study

Question 1 of 205eccefa4bacbc34ba4d4829b

As shown in the illustrated solid-state stepless acceleration starting method graphs, which figure graphs a starting method that provides linear acceleration, but where the acceleration rate depends on the load and a tachometer input is not required? See illustration EL-0143.

Back

Question 1 of 20

5eccefa4bacbc34ba4d4829b

No comments yet

Be the first to share your thoughts!

If the question has a related picture, it will appear here.

🔍 Key Concepts

• Difference between controlling motor speed, motor current, and motor voltage during start-up • How a tachometer (speed feedback) is used in a closed-loop control system • Why an open-loop voltage ramp can give a "stepless" or smooth acceleration whose actual rate depends on the connected load

💭 Think About

• Look at each figure and note what is on the vertical axis (speed, current, or voltage). Which one could be controlled without measuring speed? • Which method would keep acceleration nearly the same even if the load changes, and which method would let the acceleration change when the load is heavier or lighter? • Ask yourself: if the controller is trying to make the speed vs time graph follow a straight line, would it need feedback from a tachometer to know the actual speed?

✅ Before You Answer

• Identify which figure shows a closed-loop speed ramp (speed directly controlled vs time) — this typically requires a tachometer. • Identify which figure shows an open-loop voltage ramp (voltage vs time) that produces smooth but load-dependent acceleration. • Eliminate any figures that are clearly current-limiting schemes rather than true linear acceleration methods.

👋 Hi! I'm Genie, your AI study assistant. How can I help you with this question?

Quick actions

— No credit card needed