Explore topic-wise MCQs in Fluid Mechanics.

This section includes 10 Mcqs, each offering curated multiple-choice questions to sharpen your Fluid Mechanics knowledge and support exam preparation. Choose a topic below to get started.

1.

THE_DIMENSIONS_OF_A_RECTANGULAR_CHANNEL_SECTION_IS_2.5M‚ÄÖ√†√∂‚Àւ•1M._CALCULATE_THE_RATE_OF_CHANGE_OF_SPECIFIC_ENERGY_IF_THE_RATE_OF_CHANGE_OF_DEPTH_IS_1.52‚ÄÖ√†√∂‚Àւ•10-3M.?$#

A. 1.17√ó10<sup>-3</sup>m
B. 2.00√ó10<sup>-3</sup>m
C. 2.03√ó10<sup>-3</sup>m
D. 2.06√ó10<sup>-3</sup>m
Answer» B. 2.00‚Äö√†√∂‚àö‚â•10<sup>-3</sup>m
Discussion
2.

Calculate_the_value_of_rate_of_change_of_specific_energy_for_a_triangular_channel_having_depth_3.5m_and_the_side_slope_is_1H:2V._Given:V_=_2.5_m/s,_dy/dx=8.6√ó10-4.$#

A. 3.47√ó10<sup>-4</sup>m
B. 4.47√ó10<sup>-4</sup>m
C. 5.47√ó10<sup>-4</sup>m
D. 6.47√ó10<sup>-4</sup>m
Answer» D. 6.47‚Äö√†√∂‚àö‚â•10<sup>-4</sup>m
Discussion
3.

The dimensions of a rectangular channel section is2.5m√ó1m. Calculate the value of Sf if the bed slope of the channel is 1 in 600. Given: dy/dx=1.52√ó10-3m?#

A. 0.0002
B. 0.0003
C. 0.0004
D. 0.0005
Answer» E.
Discussion
4.

Calculate the value of bed slope of a trapezoidal channel having depth 2m and width 2.5m with a side slope of1H:3V. Given: dy/dx=1.43√ó10-3; Sf = 0.00002; V = 1.5 m/s.$

A. 1 in 1000
B. 1 in 900
C. 1 in 800
D. 1 in 700
Answer» D. 1 in 700
Discussion
5.

Calculate the velocity of flow in a triangular channel having depth 7m and the side slope of the channel is 1H:4V if the bed slope of the channel is 1 in 1200 and the slope of the energy line is 0.00010. Given:( dy)/dx=7.55m.

A. 1 m/s
B. 2 m/s
C. 3 m/s
D. 4 m/s
Answer» B. 2 m/s
Discussion
6.

Determine the rate of change of depth of a rectangular channel having dimensions 2m√ó3m and the velocity of flow is 2 m/s.$

A.
B. 0.63m
C. 1.63m
Answer» C. 1.63m
Discussion
7.

Calculate the value of Sf for a trapezoidal channel having depth 2m, width 5m and side slope of 1H:1.5V. Given: dy/dx=1.18√ó10-3,S0 = 1 in 1000, C = 50.$

A. 0.00001
B. 0.00002
C. 0.00003
D. 0.00004
Answer» B. 0.00002
Discussion
8.

Calculate the rate of change of depth of a triangular channel if the depth is 4m and the side slope is1H:2V. Given:S0 = 1 in 1500;Sf = 0.00004 and n=0.010.

A. 8.95√ó10<sup>-4</sup>m
B. 9.95√ó10<sup>-4</sup>m
C. 10.95√ó10<sup>-4</sup>m
D. 11.95√ó10<sup>-4</sup> m
Answer» B. 9.95‚Äö√†√∂‚àö‚â•10<sup>-4</sup>m
Discussion
9.

Calculate the rate of change of depth of a rectangular channel having depth 1m and width 4m. Given: C = 40, S0 = 1/900, Sf = 0.0005

A. 4.94√ó10<sup>-4</sup> m
B. 5.94√ó10<sup>-4</sup> m
C. 6.94√ó10<sup>-4</sup> m
D. 7.94√ó10<sup>-4</sup> m
Answer» D. 7.94‚Äö√†√∂‚àö‚â•10<sup>-4</sup> m
Discussion
10.

If the value of rate of change of specific energy is 7.79√ó10-4 m and Sf = 0.00013, calculate the value of bed slope.

A. 1 in 1000
B. 1 in 1100
C. 1 in 1200
D. 1 in 1300
Answer» C. 1 in 1200
Discussion