Explore topic-wise MCQs in Civil Engineering.

This section includes 54 Mcqs, each offering curated multiple-choice questions to sharpen your Civil Engineering knowledge and support exam preparation. Choose a topic below to get started.

51.

If a shaft turns at 150 rpm under a torque of 1500 Nm, then power transmitted is

A. 15π kW
B. 10π kW
C. 7.5π kW
D. 5π kW
Answer» D. 5π kW
Discussion
52.

A hollow shaft of external and internal diameter as 100 mm and 40 mm respectively is transmitting power at 120 rpm. If the shearing stress is not to exceed 50 MPa, the power the shaft can transmit will be

A. 100 kW
B. 120 kW
C. 140 kW
D. 160 kW
Answer» C. 140 kW
Discussion
53.

Consider the following statements:1. The shear stress distribution across the section of a circular shaft subjected to twisting varies parabolically.2. The shear stress at the centre of a circular shaft under twisting moment is zero.3. The shear stress at the extreme fibres of a circular shaft under twisting moment is maximum.Which of the above statements is/are correct?

A. 1, 2 and 3
B. 1 only
C. 2 only
D. 2 and 3 both
Answer» E.
Discussion
54.

For the shafts having square cross sections, the maximum shear stress occurs at a point

A. On the edge of the cross section that is closest to the centre axis of the shaft.
B. On the diagonal of the cross section that is far to the centre axis of the shaft.
C. On the diagonal of the cross section, at half the edge length from the centre axis of the shaft.
D. On the diagonal of the cross section, at one-fourth of diagonal length from the centre axis of the shaft.
Answer» B. On the diagonal of the cross section that is far to the centre axis of the shaft.
Discussion