The design of shafts made of brittle materials is based on
(a) Guest’s theory  
(b) Rankine’s theory
(c) St. Venant’s theory  
(d) Von Mises Theory

1 Answer

Answer :

(b) Rankine’s theory

Related questions

Description : Maximum principal stress theory for the failure of a material at elastic point, is known  (A) Guest's or Trecas' theory  (B) St. Venant's theory  (C) Rankine's theory  (D) Von Mises' theory

Last Answer : (C) Rankine's theory 

Description : Which theory is perfect for design of shaft when it mades from brittle materials........... A. Rankine theory B. Guest's theory C. Vonmises theory D. St. Venant's theory.

Last Answer : A. Rankine theory

Description : Total strain energy theory for the failure of a material at elastic limit, is known  (A) Guest's or Trecas' theory  (B) St. Venant's theory  (C) Rankine's theory  (D) Haig's theory 

Last Answer : (D) Haig's theory 

Description : Maximum shear stress theory for the failure of a material at the elastic limit, is known  (A) Guest's or Trecas' theory  (B) St. Venant's theory  (C) Rankine's theory  (D) Haig's theory

Last Answer : (A) Guest's or Trecas' theory

Description : Maximum strain theory for the failure of a material at the elastic limit, is known as  (A) Guest's or Trecas' theory  (B) St. Venant's theory  (C) Rankine's theory  (D) Haig's theory 

Last Answer : (B) St. Venant's theory

Description : Shear strain energy theory for the failure of a material at elastic limit, is due to  (A) Rankine  (B) Guest or Trecas  (C) St. Venant  (D) Von Mises

Last Answer : (D) Von Mises

Description : Maximum total strain energy theory is also known as (a) Guest’s theory (b) Haigh theory (c) St.Venant’s theory (d) None

Last Answer : (b) Haigh theory

Description : Maximum principal strain theory is also called as (a) Guest’s theory (b) Haigh theory (c) St.Venant’s theory (d) None

Last Answer : (c) St.Venant’s theory

Description : Rankine’s And Guest’s Theory Of Failure Are Applicable For What Materials?

Last Answer : Rankine’s theory of failure is applicable for brittle materials. Guest’s theory of failure is applicable for ductile materials.

Description : Shear strain energy theory is also known as (a) Von Mises Theory (b) Coulomb’s theory (c) Rankine theory (d) None

Last Answer : (a) Von Mises Theory

Description : Maximum total strain energy theory is also known as (a) Huber theory (b) Rankine theory (c) St.Venant’s theory (d) None

Last Answer : (a) Huber theory

Description : The idea that government's fiscal policy can be used to stabilize the level of output and employment can be attributed to which of the following economists: a) Frederich Hayek b) Ludwig von Mises c) Frederic Bastiat d) John Maynard Keynes

Last Answer : d) John Maynard Keynes John Maynard Keynes's 1936 book, 'The General Theory of Employment, Interest, and Money' laid the foundations for Macroeconomics

Description : Rankine’s formula is generally used when slenderness ratio lies in between (a) 0-60 (b) 0-80 (c) 0-100 (d) Any value

Last Answer : (d) Any value

Description : Two shafts A and B are made of the same material. The diameter of the shaft A is twice as that of shaft B. The power transmitted by the shaft A will be ........... of shaft B. (a) twice (b) four times (c) eight times (d) sixteen times

Last Answer : (c) eight times

Description : The following option is correct a. There is neither advantage nor disadvantage in transmitting power at high speed b. There is advantage in transmitting power at high speeds c. There is ... There is advantage in transmitting power at high speed provided shafts are made of high speed steel

Last Answer : b. There is advantage in transmitting power at high speeds

Description : The shafts are made of a. mild steel b. alloy steel c. copper alloys d. cast iron.

Last Answer : d. cast iron.

Description : In shafts with keyways the allowable stresses are usually ------------ proportional to the twisting moment. a.25% b. 50% c. 75% d. 95%

Last Answer : c. 75%

Description : The shafts will have same strength on the basis of torsional rigidity, if (a) diameter and length of both shafts is same (b) material of both shafts is same (c) angle of twist for both shafts is same (d) all of above conditions are satisfied

Last Answer : (d) all of above conditions are satisfied

Description : Flexible shafts have ______ rigidity in bending moment. a) High b) Low c) Very high d) Extremely low

Last Answer : b) Low

Description : Flexible shafts have ___ rigidity in torsion making them flexible. a) Low b) High c) Very high d) Infinitely small

Last Answer : b) High

Description : Solid shafts are used in epicyclic gearboxes. a) True b) False

Last Answer : b) False

Description : Two shafts will have equal strength, if (a) diameter of both the shafts is same (b) angle of twist of both the shafts is same (c) material of both the shafts is same (d) twisting moment of both the shafts is same

Last Answer : d) twisting moment of both the shafts is same

Description : The ratio of strengths of solid to hollow shafts, both having outside diameter D and hollow having inside diameter D/2, in torsion, is a.1/4 b. 1/2 c. 1/16 d. 15/16

Last Answer : d. 15/16

Description : Which of the following act on shafts? a) Torsional moment b) Bending Moment c) Both torsional and bending d) None of the mentioned

Last Answer : c) Both torsional and bending

Description : It is a secondary shaft used to counter the direction of main shaft. 81. Shafts are subjected to ______ forces. a) Compressive b) Tensile c) Shear d) twisting

Last Answer : b) Tensile

Description : .The shafts are designed on the basis of (a) Rigidity (b) Strength (c) Both of these (d) Either of these

Last Answer : (c) Both of these

Description : -For two shafts in parallel or for two concentric shafts a. T = T1 + T2 b. T = T1 = T2 c. T = T1 – T2 d. T = (T1.T2)^1/2

Last Answer : a. T = T1 + T2

Description : For two shafts in series or having different diameters for two parts of length a. T = T1 + T2 b. T = T1 = T2 c. T = T1 – T2 d. T = (T1.T2)^1/2

Last Answer : b. T = T1 = T2

Description : For same length, same material, same length a. Weight of solid shaft is less than weight of hollow shaft b. Weight of solid shaft is more than weight of hollow shaft c. Weight of hollow and solid shafts will be same d. Sometime more sometime less

Last Answer : b. Weight of solid shaft is more than weight of hollow shaft

Description : For same weight, same material, same length a. Solid shaft is always stronger than a hollow shaft b. Solid shaft is always weaker than a hollow shaft and strength ratio will depend upon Do/Di of ... of a solid shaft is always weaker and the strength ratio will depend upon Do/Di of hollow shaft

Last Answer : b. Solid shaft is always weaker than a hollow shaft and strength ratio will depend upon Do/Di of hollow shaft

Description : Which of the following is incorrect? a. In torsion equation, we use mean torque b. In torsion equation, we use maximum torque c. Many shafts are designed under combined bending and torsion load d. Shafts are also designed for torsional rigidity

Last Answer : a. In torsion equation, we use mean torque

Description : Two shafts in torsion will have equal strength if a. Only diameter of the shafts is same b. Only angle of twist of the shaft is same c. Only material of the shaft is same d. Only torque transmitting capacity of the shaft is same

Last Answer : d. Only torque transmitting capacity of the shaft is same

Description : The shafts are designed on the basis of a. strength and rigidity. b. ductility. c. malleablility. d. resilience.

Last Answer : a. strength and rigidity.

Description : For two shafts joined in parallel, the --------------- in each shaft is same. a. shear stress. b. Angle of twist c. torque d. torsional stress.

Last Answer : b. Angle of twist

Description : For two shafts joined in series, the --------------- in each shaft is same. a. shear stress. b. Angle of twist c. torque d. torsional stress.

Last Answer : c. torque

Description : Ratio of diameters of two shafts joined in series is 2. If the two shafts have the same material and the same length the ratio of their shear stresses is a. 2 b. 4 c. 8 d. 16

Last Answer : c. 8

Description : Ratio of diameters of two shafts joined in series is 2. If the two shafts have the same material and the same length the ratio of their angles of twist is a. 2 b. 4 c. 8 d. 16

Last Answer : d. 16

Description : The relation governing the torsional torque in circular shafts is a. T/r=τ/l=Gθ/J b. T/J=τ/r=Gθ/l c. T/J=τ/l=Gθ/r d. T/l=τ/r=Gθ/J

Last Answer : b. T/J=τ/r=Gθ/l

Description : Which stress strain curve is more steep (a) For a ductile material (b) For a brittle material (c) For a pure metal (d) None

Last Answer : b) For a brittle material

Description : A brittle material has (a) No elastic zone (b) No plastic zone (c) Large plastic zone (d) None of these

Last Answer : 2

Description : Shear strain energy theory is also known as ( a) Huber theory (b) Rankine theory (c) Mises-Hencky theory (d) None

Last Answer : (c) Mises-Hencky theory

Description : The design of a beam is based on strength criteria, if the beam is sufficiently strong to resist ----------------. a.Shear force b.deflection c. both a and b. d. none of the above.

Last Answer : a.Shear force

Description : Write any four assumptions of Rankine’s theory made for non-cohesive soils.

Last Answer : Assumption of Rankines Theory for non-cohesive soils : i. The soil is semi-infinite, homogenous, dry and cohesion less. ii. The soil element is in the state of plastic equilibrium. iii ... and smooth. v. The wall yield about the base thus satisfies deformation condition for plastic equilibrium. 

Description : Maximum total strain energy theory is applicable to (a) Ductile materials (b) Brittle materials (c) Composite materials (d) None

Last Answer : (a) Ductile materials

Description : Maximum total strain energy theory is applicable to (a) Ductile materials (b) Brittle materials (c) Composite materials (d) None

Last Answer : (b) Brittle materials

Description : Maximum principal strain theory is applicable to (a) Ductile materials (b) Brittle materials (c) Composite materials (d) None

Last Answer : (b) Brittle materials

Description : Maximum shear stress theory is applicable to (a) Ductile materials (b) Brittle materials (c) Composite materials

Last Answer : (a) Ductile materials

Description : Maximum principal stress theory is applicable to (a) Ductile materials (b) Brittle materials (c) Composite materials (d) None

Last Answer : (b) Brittle materials

Description : Maximum Principal Stress Theory is not good for brittle materials. a) True b) False

Last Answer : b) False

Description : Maximum principal theory is also known as (a) Beltrami Theory (b) Maximum normal stress theory (c) Saint Venant’s theory (d) None

Last Answer : (b) Maximum normal stress theory