Question:
The time duration of coasting in a speed-time curve refers to the period when _______.
The time duration of coasting in a speed-time curve refers to the period when _______.
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During coasting, train glides using its momentum without power input, and speed drops slowly.
Updated On: Jun 24, 2025
- Train is accelerating
- Train is running at constant speed
- No power is supplied, and speed reduces gradually
- Brakes are applied
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The Correct Option is C
Solution and Explanation
Step 1: What is coasting?
Coasting refers to a phase in train motion where the motor is not supplying power, and the train moves due to its inertia.
Step 2: Characteristics of coasting
- No tractive effort is applied
- Speed gradually decreases due to resistive forces like friction and wind
Step 3: Comparison
- Not acceleration → motor gives power
- Not braking → brakes provide negative force
- Not constant speed → coasting implies deceleration
Coasting refers to a phase in train motion where the motor is not supplying power, and the train moves due to its inertia.
Step 2: Characteristics of coasting
- No tractive effort is applied
- Speed gradually decreases due to resistive forces like friction and wind
Step 3: Comparison
- Not acceleration → motor gives power
- Not braking → brakes provide negative force
- Not constant speed → coasting implies deceleration
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