B:-55%
C:-52.5%
D:-62.5%

Correct Answer:-Question Cancelled

Question79:-Match List-I (Turbine) with List-ll (Specific speeds) and select the
correct answer using the codes given below the lists

List-l List-ll

൧. Francis 1. 10-35

B. Kaplan 2. 35-60

C. Pelton (one jet) 3. 60-300

൧. Pelton (two jets) 4. 300-1000

A:-A-3, B-4, C-1, D-2
B:-A-2, B-3, C-4, D-1
C:-A-1, B-2, C-3, D-4
D:-A-4, B-1, C-3, D-2

Correct Answer:- Option-A

Question80:-For maximum efficiency of a series of curved vanes, the vane speed is

A:-Quarter of the jet speed
B:-One third of the jet speed
C:-Equal to jet speed
D:-Half of the jet speed
Correct Answer:- Option-D

Question81:-The centroid of an equilateral triangle is located at

A:-One-third the distance from each vertex along each median
B:-Two-third the distance from each vertex along each median
C:-Half the distance from each vertex along each median
D:-Various distance from each vertex along the median
Correct Answer:- Option-B

Question82:-A steel cylindrical closed container having inner diameter D and wall
thickness t, where D > 20t, is holding gas at pressure P. If the container is
positioned horizontally, the hoop stress experienced by the cylinder could be

A:-2 P/t

B:-4 P/t

C:-PD/2t

D:-PD/4t

Correct Answer:- Option-C

Question83:-Which among the following screw thread profile is suggested in higher
axial load applications