Description : For two springs connected in parallel, net force is equal to the sum of force in each spring. a) True b) False
Last Answer : a) True
Description : Can concentric springs be used to obtain a force which is not proportional to its deflection? a) True b) False
Description : 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
Last Answer : (A) k1k2/k1 + k2
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
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
Description : In concentric springs, vibrations called surge are amplified. a) True b) False
Description : Martin’s factor compensates for curvature effect in springs. a) True b) False
Description : Multi leaf springs are not recommended for automobile and rail road suspensions. a) True b) False
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
Description : 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
Last Answer : (A) k 1 k 2 / (k 1 + k 2 )
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 springs
Last Answer : (D) Concentric springs
Description : 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 ... is less than the buckling load (D) Modulus of resilience is proportional to (stress at elastic limit)2
Last Answer : (C) Crushing load or columns is less than the buckling load
Description : When two Belleville sprigs are arranged in series, half deflection is obtained for same force. a) One fourth deflection b) Double deflection c) Four time deflection d) None of the listed
Last Answer : b) Double deflection
Description : Cotter joint is connected to parallel roads . A. True B. False
Last Answer : B. False
Description : Cold riveting holds the connected parts better than hot riveting. a) True b) False
Description : Which of the following relations is true when springs are connected series. A K e = K 1 + K 2 B (1 / K e ) = (1/K 1 ) + (1/ K 2 ) C K e = (1/K 1 ) + (1/ K 2 ) D (1 / K e ) = K 1 + K 2
Last Answer : B (1 / K e ) = (1/K 1 ) + (1/ K 2 )
Description : Which of the following relations is true when springs are connected series. (A) K e = K 1 + K 2 (B) (1 / K e ) = (1/K 1 ) + (1/ K 2 ) (C) K e = (1/K 1 ) + (1/ K 2 ) (D) (1 / K e ) = K 1 + K 2
Last Answer : (B) (1 / K e ) = (1/K 1 ) + (1/ K 2 )
Description : 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
Last Answer : (C) both springs always have opposite hand of helices
Description : For two springs in parallel, 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
Last Answer : (B) k 1 + k 2
Description : 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 ... spring (C) Mean coil diameter of each spring (D) Square of wire diameter of each spring
Last Answer : (D) Square of wire diameter of each spring
Description : Cocentric springs are used in (A) Heavy duty diesel engines (B) aircraft engines (C) railroad suspensions (D) all of the above
Last Answer : (D) all of the above
Description : Factor of safety in the design of springs is usually (A) 1.5 or less (B) 3 or less (C) 4.5 or less (D) 6 or less
Last Answer : (A) 1.5 or less
Description : Multi-leaf springs are used in (A) automobile suspension (B) railroad suspension (C) both (A) and (B) (D) none of the above
Last Answer : (C) both (A) and (B)
Description : The leaves of multi-leaf springs are subjected to (A) bending stress (B) shear stress (C) axial stress (D) all of the above
Last Answer : (A) bending stress
Description : 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
Last Answer : (A) shorten the spring
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
Last Answer : (D) Any of the above objectives
Description : Springs are used, (A) To absorb shocks and vibrations (B) To store and release energy (C) To measure force (D) For any of the above functions
Last Answer : (D) For any of the above functions
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
Description : A spring of stiffness constant k is cut in two equal parts. The stiffness constant of new spring will be k/2. a) True b) False
Description : A thick film bearing is a bearing (A) Where the surfaces of journal and the bearing are completely separated by a film of lubricant (B) Where the surfaces of journal and the bearing are partially ... are separated by a film created by elastic deflection of parts (D) Where there is no lubricant
Last Answer : (A) Where the surfaces of journal and the bearing are completely separated by a film of lubricant
Description : A thin film bearing is a bearing (A) Where the surfaces of journal and the bearing are completely separated by a film of lubricant (B) Where the surfaces of journal and the bearing are partially ... are separated by a film created by elastic deflection of parts (D) Where there is no lubricant
Last Answer : (B) Where the surfaces of journal and the bearing are partially separated by a film of lubricant and there is partial metal to metal contact
Description : A zero film bearing is a bearing (A) Where the surfaces of journal and the bearing are separated by a thick film of lubricant (B) Where the surfaces of journal and the bearing are partially ... bearing are separated by a film created by elastic deflection of parts (D) Where there is no lubricant
Last Answer : (D) Where there is no lubricant
Description : 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
Last Answer : (A) Pδ/2
Description : The force required to produce unit deflection is known as (A) gradient of spring (B) stiffness of the spring (C) spring constant (D) all of the above
Description : The spring index is, (A) Ratio of wire diameter to mean coil diameter (B) Force per unit cross-sectional area of spring (C) Ratio of mean coil diameter to wire diameter (D) Force required to produce unit deflection
Last Answer : (C) Ratio of mean coil diameter to wire diameter
Description : 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
Last Answer : (C) Belleville (coned disk) spring
Description : The stiffness of spring is, (A) Deflection per unit of axial force (B) Force per unit cross-sectional area of spring (C) Ratio of mean coil diameter to wire diameter (D) Force required to produce unit deflection
Last Answer : (D) Force required to produce unit deflection
Description : Belleville spring can only produce linear load deflection characteristics. a) Only linear b) Linear as well as non linear c) Non-linear d) None of the mentioned
Last Answer : b) Linear as well as non linear
Description : The axial deflection of spring for the small angle of θ is given by? a) 328PDɜN/Gd4 b) 8PDɜN/Gd4 c) 16PDɜN/Gd4 d) 8PD2N/Gdɜ
Last Answer : b) 8PDɜN/Gd4
Description : Two springs have spring stiffness of 1500 N/m and 1 KN/m respectively. If they are connected in series, what will be the equivalent spring stiffness? A 1KN/m B 600 N/m C 1 N/m D 600 KN/m
Last Answer : B 600 N/m
Description : Two springs have spring stiffness of 1500 N/m and 2000 N/m respectively. If they are connected in series, what is the spring stiffness if they are replaced by an equivalent system.3500 N/m A. 3500 N/m B. 1166 N/mC. 857.63 N/m D. None of the above
Last Answer : C. 857.63 N/m
Description : Two springs have spring stiffness of 1500 N/m and 2000 N/m respectively. If they are connected in series, what is the spring stiffness if they are replaced by an equivalent system.3500 N/m A) 3500 N/m B) 1166 N/m C) 857.63 N/m D) None of the above
Last Answer : C) 857.63 N/m
Description : Two springs have spring stiffness of 1500 N/m and 1 KN/m respectively. If they B are connected in series, what will be the equivalent spring stiffness? (A) 1KN/m (B) 600 N/m (C) 1 N/m (D) 600 KN/m
Last Answer : (B) 600 N/m
Description : Two springs have spring stiffness of 1500 N/m and 2000 N/m respectively. If they are connected in series, what is the spring stiffness a. 3500 N/m b. 1166 N/m c. 857.63 N/m d. None of the above
Last Answer : c. 857.63 N/m
Description : Two springs have spring stiffness of 1500 N/m and 2000 N/m respectively. If they are connected in series, what is the spring stiffness if they are replaced by an equivalent system.3500 N/m a. 3500 N/m b. 1166 N/m c. 857.63 N/m d. None of the above
Last Answer : c. 857.63
Description : A galvanometer of resistance `50 Omega` is connected to a battery of 8 V along with a resistance of `3950 Omega` in series. A full scale deflection of
Last Answer : A galvanometer of resistance `50 Omega` is connected to a battery of 8 V along with a resistance of `3950 Omega ... `. A. 1950 B. 7900 C. 2000 D. 7950
Description : A galvanometer of resistance `50 Omega ` is connected to a battery of `3 V` along with resistance of `2950 Omega` in series. A full scale deflection o
Last Answer : A galvanometer of resistance `50 Omega ` is connected to a battery of `3 V` along with resistance of `2950 ... `Omega` C. 5550 `Omega` D. 6050 `Omega`
Description : Feather key can be used to prevent axial motion between two elements. a) True b) False