
part 2- mdsp
Quiz
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Engineering
•
University
•
Practice Problem
•
Easy
Jazzmine Mella
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16 questions
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1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Compute the maximum deflection of a 22-coil helical spring having a load of 120 kg. The spring has squared and ground ends with modulus of elasticity in shear of 80 GPa, outside diameter of 8 cm and wire diameter of 8 mm.
215 mm*
120 mm
200 mm
309 mm
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
The load on a helical spring is 1600-lb and the corresponding deflection is to be 4 in. Rigidity modulus is 11 million psi and the maximum intensity of safe torsional stress is 60,000 psi. Design the spring for the total number of turns if the wire is circular in cross section with a diameter of 5/8 in. and a center line radius of 1 % in. The spring is squared and ground ends.
19 coils.
21 coils
20 coils
22 coils*
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
All four compression coil spring support one load of 700 kg. All four springs are arranged in parallel and rated same at 0.609 kg/mm. Compute the deflection in mm.
64
178
147
287*
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
A body weighing 1000 lb falls 6 inches and strikes a 2000 lb per in. spring. The deformation of the spring is:
1 in.
3 in.*
2 in.
6 in.
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
A round steel shaft rotates at 200 rpm and is subjected to a torque of 275 N-m and a bending moment of 415 N-m. Determine the equivalent twisting moment and the equivalent bending moment.
597.84 N-m; 546.42 N-m
456.42 N-m; 497.85 N-m*
546.42 N-m; 597.84 N-m
497.85 N-m; 456.42 N-m
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
A shaft supported on bearings 200 mm apart transmits. 187 kW at 200 rpm. The maximum bending moment is 2712 N-m. The allowable shearing stress is 53.3 MPa and the allowable bending stress is 46.7 MPa because of the unusual loading. Find the shaft diameter.
96.25 mm
109.5 mm*
102.9 mm
100.2 mm
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
A pulley fastened by a rectangular key to a lineshaft transmits 10 kw at a speed of 1000 rpm. If the shearing stress in the shaft is 30 Mpa and in the key is 24 Mpa, find the length of the rectangular key if the width is that of the shaft diameter.
45.2 mm
55.6 mm
50.9 mm*
60.4 mm
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