UPSC Civil Service Exam Questions

Q1: Which of the following assumptions are made in the analysis of jet impinging normally on a moving plate?
1. Friction between jet and plate is neglected
2. Flow is steady
3. Momentum of jet is unchanged
4. Plate moves at a constant velocity
Choose the correct answer using the codes given below :

A 1, 2 and 4

B 1, 2 and 3

C 2, 3 and 4

D 1, 3 and 4

ANS:C - 2, 3 and 4

Momentum changes but Q remains constant.



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