mechanics materials , Mechanical Engineering

Assignment Help:
1) Factor of Safety is calculated by using which of the following set of values? [Select the one best answer from the choices given below.]
Answer
a. Yield Stress and Allowable Stress
b. Fracture Stress and Yield Stress
c. Ultimate Tensile Stress and Allowable Stress
d. Ultimate Tensile Stress and Allowable Stress
e. All of the above



2) Centroids deal with the distribution of which of the following? [Select the one best answer from the choices given below.]
Answer
a. mass
b. area
c. weight
d. pressure
e. none of the above



3) Two rods A and B support a 50-lb lamp, as indicated in the picture below. If the same force is developed in each rod (i.e., FA = FB) and the diameter of rod A is larger than the diameter of rod B, which rod will have the greater stress?

Answer
a. Rod A
b. Rod B
c. Both will have equal stress
d. can not be determined with the given information



4) The elastic portion of the tension stress-strain diagram for an aluminum alloy is shown in the diagram below. The specimen used for the test has a gauge length of 2 in. and a diameter of 0.5 in. When the applied load is 9 kip, the new diameter of the specimen is 0.49935 in. Compute the shear modulus G for the aluminum used. (Hint: Calculate the Poisson''s ratio first and then use the equation for shear modulus G = E/[2(1+v)].) [Select the one best answer from the choices given below.]

Answer
a. 45.8 ksi
b. 4380 ksi
c. 5390 ksi
d. 9000 kip
e. 11,700 ksi


5) The A-36 steel plate shown below has a thickness of 12 mm. If there are shoulder fillets at B and C, and the allowable axial (normal) stress is 150 MPa , determine the maximum axial load P that it can support. [Select the one best answer from the choices given below.]

Answer
a. 77 kN
b. 108 kN
c. 151 kN
d. 7.7 MN
e. 15.1 MN



6) Two aluminum rods AB and AC, shown in diagram below, have diameters of 10 mm and 8 mm, respectively. Determine the largest vertical force P that can be supported. The allowable tensile stress for the aluminum is 150 MPa . [Select the one best answer from the choices given below.]

Answer
a. 7.54 kN
b. 8.33 kN
c. 10.7 kN
d. 11.8 kN

Related Discussions:- mechanics materials

Maximal conductances and reversal potentials, By introducing their model of...

By introducing their model of neural excitability in 1952, Alan Lloyd Hodgkin and Andrew Huxley not only shed light on the mechanism underlying a very important phenomenon in Physi

Shut-off valves on major zone, Q. Shut-off valves on major zone? Are shu...

Q. Shut-off valves on major zone? Are shut-off valves on major zone branches and on the bottom and top of riser? Are balancing valves on return branches? Are control valves on

Vented causeway, Vented Causeway: Vented causeways are structures pro...

Vented Causeway: Vented causeways are structures provided with vents (usually pipes) to take care of dry weather perennial flows and which allow water to overflow the paved b

Define the analytical solid modeling, Analytical Solid Modeling (ASM) A...

Analytical Solid Modeling (ASM) ASM is closely related to finite element modeling. It is developed to aid designers in the arduous task of modeling complex geometry commonly fo

Moment of resistance, Explain the Moment of resistance? Sol.: The two...

Explain the Moment of resistance? Sol.: The two equal and unlike parallel forces, the lines of action of which are not same, form couple. The resultant compressive force ( P

Capacitor discharge welding, Capacitor Discharge Welding This is used ...

Capacitor Discharge Welding This is used for welding of studs, welding of thermocouples, etc. on the base metal. A low voltage, high amperage electrical discharge from a capac

Determine coefficient of friction, Following data is provided for a 360 o ...

Following data is provided for a 360 o hydrodynamic bearing : Radial load = 3.2 kN journal Speed =1490 rpm journal diameter = 50 mm bearing length = 50 mm radial cl

Define the term miller indices, Define the term Miller Indices. Miller ...

Define the term Miller Indices. Miller Indices are a process of explaining the orientation of a plane or set of planes into a lattice within relation to the unit cell. They wer

Control function in production management, Control Function in Production M...

Control Function in Production Management: Controlling is a sub system of the production system where a part of the output is monitored for feedback signals to give corrective

Write Your Message!

Captcha
Free Assignment Quote

Assured A++ Grade

Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!

All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd