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

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

1 Answer

Answer :

b) High
by

Related questions

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

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

Last Answer : b) High

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

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

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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

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

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Last Answer : b) Low

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

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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

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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

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A circular shaft subjected to torsion undergoes a twist of 10in a length of 120 cm. If the maximum shear stress induced is limited to 1000 kg/cm2and if modulus of rigidity G = 0.8 x 106then the radius of the shaft should be (a) p/8 (b) p/27 (c) 18/p (d) 27/p

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Last Answer : (d) 27/p

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

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

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Spiral spring is quite rigid. (a) Yes (b) No it is flexible (c) It is of moderate rigidity (d) Rigidity can’t be determined

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The material used for making torsion bar is (a) Steel (b) Cast iron (c) High carbon steel (d) All of the above

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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 disadvantage in transmitting power at high speeds d. There is advantage in transmitting power at high speed provided shafts are made of high speed steel

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The type of spring used to achieve any linear and non-linear load-deflection characteristics is (a)spiral spring (b) non-ferrous spring (c)Belleville spring (d) torsion spring

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When a close-coiled helical spring is subjected to an axial load, it is said to be under. (a) Bending (b) Shear (c) Torsion (d) Crushing

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Which of the following loading is considered for the design of axles ? (a) Bending moment only (b) Twisting moment only (c) Combined bending moment and torsion (d) Combined action of bending moment, twisting moment and axial thrust

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Which of the following assumptions are made in torsion theory? a. Shaft is perfectly straight b. Material of the shaft is heterogeneous c. Twist cannot be uniform along the length of the shaft d. Shaft is perfectly curve

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A member subjected to couple produces rotational motion about its longitudinal axis called as ________ a. torsion b. twisting moment c. both a. and b. d. bending moment

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A shaft a. Is always subjected to pure torsion b. Combination of M & T but no end thrust c. Combination of torque & end thrust but no bending moment d. May be subjected to a combination of M, T and end thrust

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In combined bending and torsion equivalent bending moment is a. Me = (M^2 + T^2)^1/2 b. Me = ½(M^2 + T^2)^1/2 c. Me = M+(M^2 + T^2)^1/2 d. Me = 1/2 [M+(M^2 + T^2)^1/2]

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Equivalent torque in combined bending and torsion is given by a. Te = (M^2 + T^2)^1/2 b. Te = ½(M^2 + T^2)^1/2 c. Te = M + T d. Te = 1/2 [M+(M^2 + T^2)^1/2]

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Which of the following is not an assumption in derivation of torsion equation? a. Circular shaft remains circular after twisting b. Plane section of the shaft remain plane after twisting c. Material of shaft is isotropic d. Angle of twist is proportional to radius

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A shaft is said to be in pure torsion if a. Turning moment is applied at one end and other end is free b. Turning force is applied at one end and other end is free c. Two opposite turning moments are applied to the shaft d. Combination of torsional load and bending load is applied to the shaft

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The ratio of strength of a hollow shaft to that of a solid shaft subjected to torsion if both are of the same material and of the same outer diameters, the inner diameter of hollow shaft being half of the outer diameter is a. 15/16 b. 16/15 c. 7/8 d. 8/7

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The variation of shear stress in a circular shaft subjected to torsion is a. Linear b. Parabolic c. Hyperbolic. d. Uniform

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

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

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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

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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

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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

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

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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

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-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

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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

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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

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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 hollow shaft c. Strength of both the shafts in equal d. Strength of a solid shaft is always weaker and the strength ratio will depend upon Do/Di of hollow shaft

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

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

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

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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

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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

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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

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Last Answer : b. T/J=τ/r=Gθ/l

The load required to produce a unit deflection in the spring is called (a) Modulus of Rigidity (b) Spring stiffness (c) Flexural rigidity (d) Tensional rigidity

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Find total number coils in a spring having square and ground ends. Deflection in the spring is 6mm when load of 1100N is applied. Modulus of rigidity is 81370N/mm². Wire diameter and pitch circle diameter are 10mm and 50mm respectively. a) 7 b) 6 c) 5 d) 4

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Last Answer : a) 7

Determine number of coils in a helical compression spring, if modulus of rigidity is 80 Gpa and spring stiffness is 50 N/ mm. Assume wire diameter and spring index as 8 mm and 5 respectively a. 11.8 turns b. 12.8 turns c. 13.3 turns d. None of the above

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The load required to produce a unit deflection in the spring is called (a) Modulus of Rigidity (b) Spring stiffness (c) Flexural rigidity (d) Tensional rigidity

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Last Answer : (b) Spring stiffness

In the theorem of three moments in the most general form a.two flexural rigidity are considered b. only one flexural rigidity is considered c.no flexural rigidity is considered d.flexural rigidity is doubled

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A simply supported beam carries uniformly distributed load of 20 kN/m over the length of 5 m. If flexural rigidity is 30000 kN.m2, what is the maximum deflection in the beam? a. 5.4 mm b. 1.08 mm c. 6.2 mm d. 8.6 mm

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Last Answer : a. 5.4 mm