The type of spring used to achieve greater load carrying capacity within given space is (A) Spiral spring (B) Springs in series (C) Multi-leaf spring (D) Concentric springs

The type of spring used to achieve greater load carrying capacity within given space is

(A) Spiral spring

(B) Springs in series

(C) Multi-leaf spring

(D) Concentric springs
by

1 Answer

Answer :

(D) Concentric springs
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Related questions

The type of spring used to achieve greater load carrying capacity within given space is (a)spiral spring (b) springs in series (c)multi-leaf spring (d) concentric spring

Description : The type of spring used to achieve greater load carrying capacity within given space is (a)spiral spring (b) springs in series (c)multi-leaf spring (d) concentric spring

Last Answer : (d) concentric spring

Concentric springs are used, (A) To achieve greater load carrying capacity with given space (B) To achieve fail-safe system (C) To eliminate surge (D) Any of the above objectives

Description : Concentric springs are used, (A) To achieve greater load carrying capacity with given space (B) To achieve fail-safe system (C) To eliminate surge (D) Any of the above objectives

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The type of spring used to absorb and release energy in mechanical watches is (A) Helical extension spring (B) Multi-leaf spring (C) Spiral spring (D) Helical torsion spring

Description : The type of spring used to absorb and release energy in mechanical watches is (A) Helical extension spring (B) Multi-leaf spring (C) Spiral spring (D) Helical torsion spring

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The type of spring used to measure weights in spring balance is, (A) Helical extension spring (B) Multi-leaf spring (C) Spiral spring

Description : The type of spring used to measure weights in spring balance is, (A) Helical extension spring (B) Multi-leaf spring (C) Spiral spring

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The type of spring used in door hinges is, (A) Helical extension spring (B) Multi-leaf spring (C) Spiral spring (D) Helical torsion spring

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The type of spring used to absorb shocks and vibrations in vehicles is, (A) Helical extension spring (B) Multi-leaf spring (C) Spiral spring (D) Belleville (coned disk) spring

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When two concentric springs are made of same material, having same free length and compressed equally by axial load, then the load shared by each spring is proportional to (A) Spring index of each spring (B) Wire diameter of each spring (C) Mean coil diameter of each spring (D) Square of wire diameter of each spring

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The type of spring used to achieve any linear or non-linear load-deflection characteristic is (A) Spiral spring (B) Non-ferrous spring (C) Belleville (coned disk) spring (D) Torsion spring

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A concentric spring consist of two helical compression springs (A) both springs always have right hand helix (B) both springs always have left hand helix (C) both springs always have opposite hand of helices (D) any of the above

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Multi-leaf springs are used in (A) automobile suspension (B) railroad suspension (C) both (A) and (B) (D) none of the above

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The leaves of multi-leaf springs are subjected to (A) bending stress (B) shear stress (C) axial stress (D) all of the above

Description : The leaves of multi-leaf springs are subjected to (A) bending stress (B) shear stress (C) axial stress (D) all of the above

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Multi leaf springs are not recommended for automobile and rail road suspensions. a) True b) False

Description : Multi leaf springs are not recommended for automobile and rail road suspensions. a) True b) False

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The static load carrying capacity of fine threads is greater than that of coarse threads. a) True b) False

Description : The static load carrying capacity of fine threads is greater than that of coarse threads. a) True b) False

Last Answer : b) False

Can concentric springs be used to obtain a force which is not proportional to its deflection? a) True b) False

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Last Answer : a) True

In concentric springs, vibrations called surge are amplified. a) True b) False

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The strain energy stored in a spiral spring is given by? a) 12M2L/Ebtɜ b) 6M2L/Ebtɜ c) 8M2L/Ebtɜ d) None of the listed

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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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Which of the following are not true for petroff’s equation? a) Shaft is considered concentric with the bearing b) Bearing is subjected to light load c) Is used to find coefficient of friction d) Frictional torque is given by fpr2l

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Leaf spring for vehicles are nipped to (a) To vary the effective length of the spring (b) to increase the interleaf friction (c) Improve the load carrying capacity of spring (d) ensure that all leaves are uniformly stressed during loading

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The dynamic load-carrying capacity of a bearing is defined as the radial load in radial bearings that can be carried for a minimum life of 1000 revolutions. (a) True (b) False

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What is the main advantage of hydrodynamic bearing over roller bearing? (a) Easy to assemble [IES-2005] (b) Relatively low price (c) Superior load carrying capacity at higher speeds (d) Less frictional resistance

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Petroff’s equation is used to find out (A) Load carrying capacity of the bearing (B) Frictional losses in the bearing (C) Unit bearing pressure on the bearing (D) Pressure distribution around the periphery of the journal

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Sommerfeld number is (A) Similar to bearing characteristic number (B) Similar to Reynold’s number (C) Dimensionless parameter that contains all the design parameters (D) Used to find out dynamic load carrying capacity of the hydrodynamic bearing

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The dynamic load carrying capacity of a bearing is defined as the radial load in radial bearings that can be carried for a minimum life of 1000 revolutions. a) True b) False

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The strip of spiral spring is never subjected to pure bending moment. a) True b) False

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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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A concentric spring consists of 2 sprigs of diameter 10mm and 4mm. The net force acting on the composite spring is 5000N. Find the force acting on each of the two springs. (a) 1232.2N and 3767.8N (b) 786.4N and 4213.6N (c) 689.7N and 4310.3N (d) 645.3N and 4354.7N

Description : A concentric spring consists of 2 sprigs of diameter 10mm and 4mm. The net force acting on the composite spring is 5000N. Find the force acting on each of the two springs. (a) 1232.2N and 3767.8N (b) 786.4N and 4213.6N (c) 689.7N and 4310.3N (d) 645.3N and 4354.7N

Last Answer : (c) 689.7N and 4310.3N

In compression springs, the external force tends to (A) shorten the spring (B) lengthen the spring (C) both (A) and (C) (D) keep the length same

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For two springs connected in parallel, net force is equal to the sum of force in each spring. a) True b) False

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Two concentric springs with stiffness equal to 100 N/mm and 80 N/mm respectively, when subjected to load of 900N will deflect by a. 9mm b. 11.25 mm c. 5mm d. 31.5 mm

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For two springs in series, effective stiffness (k) is Where k 1 & k 2 are stiffness of springs 1 & 2 respectively (A) k 1 k 2 / (k 1 + k 2 ) (B) k 1 + k 2 (C) k 1 k 2 (D) (k 1 + k 2 ) / k 1 k 2

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Two springs of stiffness k1 and k2 are connected in series, the combined (A) k1k2/k1 + k2 (B) k1k2/k1 - k2 (C) k1 + k2 (D) k1 + k2/k1k2

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For two springs connected in series, the net deflection is equal to the sum of deflection in two springs. a) True b) False

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Pick out the wrong statement. (A) The equivalent stiffness of two springs (of equal stiffness 'S') in series is S/2 while in parallel is 2S (B) For a helical spring, deflection is proportional to D3(D = mean coil diameter) or d4(d = wire diameter) (C) Crushing load or columns is less than the buckling load (D) Modulus of resilience is proportional to (stress at elastic limit)2

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Last Answer : (C) Crushing load or columns is less than the buckling load

The longest leaf in Semi-elliptic leaf spring is known as (A) chief leaf (B) master leaf (C) major leaf (D) higher leaf

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The longest leaf in a leaf spring is called centre leaf. a) It is called middle leaf b) It is called master leaf c) Yes d) None of the listed

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The strain energy (E) stored in the spring is given by Where P=Load and δ = deflection of spring (A) Pδ/2 (B) 2Pδ (C) Pδ/3 (D) Pδ/4

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The spring used in mechanical toys is (a) Leaf spring (b) Spiral spring (c) Helical spring (d) All of these

Description : The spring used in mechanical toys is (a) Leaf spring (b) Spiral spring (c) Helical spring (d) All of these

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A spring used to absorb shocks and vibrations is (a) Close-coil helical spring (b) Open coiled helical spring (c) Spiral spring (d) Leaf spring

Description : A spring used to absorb shocks and vibrations is (a) Close-coil helical spring (b) Open coiled helical spring (c) Spiral spring (d) Leaf spring

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The spring used in mechanical toys is (a) Leaf spring (b) Spiral spring (c) Helical spring (d) All of these

Description : The spring used in mechanical toys is (a) Leaf spring (b) Spiral spring (c) Helical spring (d) All of these

Last Answer : (b) Spiral spring

A spring used to absorb shocks and vibrations is (a) Close-coil helical spring (b) Open coiled helical spring (c) Spiral spring (d) Leaf spring

Description : A spring used to absorb shocks and vibrations is (a) Close-coil helical spring (b) Open coiled helical spring (c) Spiral spring (d) Leaf spring

Last Answer : d) Leaf spring

In hydrodynamic bearing, (A) The axis of journal is eccentric with respect to axis of bearing (B) The axis of journal is concentric with respect to axis of bearing (C) The axis can be either eccentric or concentric depending upon speed (D) None of the above

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Last Answer : (A) The axis of journal is eccentric with respect to axis of bearing

In hydrostatic bearing, (A) The axis of journal is eccentric with respect to axis of bearing (B) The axis of journal is concentric with respect to axis of bearing (C) The axis can be either eccentric or concentric depending upon speed (D) None of the above

Description : In hydrostatic bearing, (A) The axis of journal is eccentric with respect to axis of bearing (B) The axis of journal is concentric with respect to axis of bearing (C) The axis can be either eccentric or concentric depending upon speed (D) None of the above

Last Answer : (B) The axis of journal is concentric with respect to axis of bearing

For finding out the bending moment for the arm (spoke) of flywheel the arm is assumed as 1. a cantilever beam fixed at the rim and subjected to tangential force at the hub 2. a simply supported beam fixed at hub and rim and carrying uniformly distributed load 3. a cantilever hub fixed at the rim and subjected to tangential force at the rim 4. a fixed beam fixed at hub and rim and carrying uniformly distributed load

Description : For finding out the bending moment for the arm (spoke) of flywheel the arm is assumed as 1. a cantilever beam fixed at the rim and subjected to tangential force at the hub 2. a simply ... tangential force at the rim 4. a fixed beam fixed at hub and rim and carrying uniformly distributed load

Last Answer : 3. a cantilever hub fixed at the rim and subjected to tangential force at the rim

For finding out the bending moment for the arm (spoke) of flywheel, the arm is assumed as, (A) A cantilever beam fixed at the rim and subjected to tangential force at the hub (B) A simply supported beam fixed at hub and rim and carrying uniformly distributed load (C) A cantilever beam fixed at the hub and subjected to tangential force at the rim (D) A fixed beam fixed at hub and rim and carrying uniformly distributed load

Description : For finding out the bending moment for the arm (spoke) of flywheel, the arm is assumed as, (A) A cantilever beam fixed at the rim and subjected to tangential force at the hub (B) A simply ... tangential force at the rim (D) A fixed beam fixed at hub and rim and carrying uniformly distributed load

Last Answer : (C) A cantilever beam fixed at the hub and subjected to tangential force at the rim

Two springs of stiffness k1 and k2 are connected in parallel, the combined stiffness of the connection is given by, (A) k1k2/k1 + k2 (B) k1k2/k1 - k2 (C) k1 + k2 (D) k1 + k2/k1k2

Description : Two springs of stiffness k1 and k2 are connected in parallel, the combined stiffness of the connection is given by, (A) k1k2/k1 + k2 (B) k1k2/k1 - k2 (C) k1 + k2 (D) k1 + k2/k1k2

Last Answer : (C) k1 + k2

Wahl factor to account for direct shear stress and stress concentration due to curvature for helical springs is given by, (A) (4C - 1/4C - 4) + 0.615/C (B) (4C - 1/4C + 4) + 0.615/C (C) (4C + 1/4C - 4) + 0.615/C (D) (4C + 1/4C + 4) + 0.615/C

Description : Wahl factor to account for direct shear stress and stress concentration due to curvature for helical springs is given by, (A) (4C - 1/4C - 4) + 0.615/C (B) (4C - 1/4C + 4) + 0.615/C (C) (4C + 1/4C - 4) + 0.615/C (D) (4C + 1/4C + 4) + 0.615/C

Last Answer : (A) (4C - 1/4C - 4) + 0.615/C

When two Belleville springs are in parallel, half force is obtained for a given deflection. a) Half force b) Double force c) Same force d) Can’t be determined

Description : When two Belleville springs are in parallel, half force is obtained for a given deflection. a) Half force b) Double force c) Same force d) Can’t be determined

Last Answer : b) Double force

The spring operates (A) Within plastic limit (B) Within elastic limit (C) Within elasto-plastic limit (D) Within visco-elastic limit

Description : The spring operates (A) Within plastic limit (B) Within elastic limit (C) Within elasto-plastic limit (D) Within visco-elastic limit

Last Answer : (B) Within elastic limit

For two spring connected in series, the force acting on each spring is same and equal to half of the external force. a) True b) False

Description : For two spring connected in series, the force acting on each spring is same and equal to half of the external force. a) True b) False

Last Answer : b) False