Description : Universal coupling is rigid types coupling. A. True B. False
Last Answer : B. False
Description : Universal coupling is ............ types of coupling. A. Flexible B. Rigid
Last Answer : A. Flexible
Description : Flange coupling is rigid types coupling. A. True B. False
Last Answer : A. True
Description : Power is transmitted by only in rigid flange coupling. a) True b) False
Last Answer : b) False
Description : Flange coupling is ............ types of coupling. A. Flexible B. Rigid
Last Answer : B. Rigid
Description : Find the shear stress in a flange at the junction of hub in rigid flanged coupling if torsional moment is 2980N-m and diameter of hub being 125mm. Also the thickness of flange is 25mm. a) 6.77N/mm2 b) 10.24N/mm2 c) 4.84N/mm2 d) 4.22N/mm2
Last Answer : c) 4.84N/mm2
Description : If shaft diameter is 60mm, how many bolts are recommended for rigid flange coupling? a) 2 b) 3 c) 4 d) 5
Last Answer : c) 4
Description : The split - pin is used in... A. Cotter joint B. Knuckle joint C. Universal coupling D. Bolted joint
Last Answer : B. Knuckle joint
Description : The joints between link of a suspension bridge, which of the following joints used.. A. Cotter joint B. Knuckle joint C. Universal coupling D. Bolted joint
Description : To joining the links of a bicycle chain which of the following joint is used. A. Cotter joint B. Knuckle joint C. Universal coupling D. Bolted joint
Description : Forked - pin joints is also called as... A. Cotter joint B. Knuckle joint C. Universal coupling D. Bolted joint
Description : The valve rod connected in steam engine by using.. A. Cotter joint B. Knuckle joint C. Universal coupling D. Bolted joint
Description : A universal coupling is used to connect two shafts A. Which are not in exact alignment B. Which are perfectly aligned C. Whose axes intersect at a small angle D. Have lateral misalignment
Last Answer : C. Whose axes intersect at a small angle
Description : Clutch and coupling can be considered to be same. a) True b) False
Description : Entire torque is transmitted by friction in the clamp coupling. a) True b) False
Description : Clamp coupling employ bolts. a) True b) False
Last Answer : a) True
Description : A machine started malfunctioning due to some issues with the coupling. The coupling emplaced in the machine was Oldham. The only coupling available in the workshop is Hooke’s coupling. So Oldham coupling can be replaced by Hooke’s coupling. a) True b) False
Description : Oldham coupling i used to connect two shafts having intersecting axes. a) True b) False
Description : A coupling is a mechanical device that temporarily joins two rotating shafts to each other. a) True b) False
Description : Which of the following statements are true about eccentrically loaded circular base? a) All bolts are symmetrically spaced with equal angle on either side of vertical b) Bolts are not preloaded c) Bearing is rigid d) Dowel pins are used to relieve stresses
Last Answer : a) All bolts are symmetrically spaced with equal angle on either side of vertical
Description : Spiral spring is quite rigid. a) Yes b) No it is flexible c) It is of moderate rigidity d) Rigidity can’t be determined
Last Answer : b) No it is flexible
Description : Welded joints are a. Hinged joint b. Rigid joint c. Freely supported joint
Last Answer : b. Rigid joint
Description : In forging, metal is in which of the following stage? a) Elastic b) Plastic c) Can be in any stage d) Rigid
Last Answer : b) Plastic
Description : Calculate the force acting on the each pin in flexible coupling if torque transmitted is 397N-m and PCD=120mm with number of pins 6. a) 1400.3N b) 1102.8N c) 1320.3N d) None of the listed
Last Answer : b) 1102.8N
Description : If 8 bolts are emplaced in a clamp coupling with shaft diameter 80mm d, calculate the diameter of each bolt if coefficient of friction is 0.3 and torque transmitted is 4000N-m. Permissible tensile stress is 80N/mm2. a) 27mm b) 25mm c) 23mm d) 21mm
Last Answer : a) 27mm
Description : If 8 bolts are emplaced in a clamp coupling with shaft diameter 80mm d, calculate the tensile force on each bolt if coefficient of friction is 0.3 and torque transmitted is 4000N-m. a) 51234.4N b) 45968.3N c) 41666.7N d) None of the listed
Last Answer : c) 41666.7N
Description : If shaft diameter is 40mm, calculate the length of sleeves in clamp coupling. a) 80mm b) 140mm c) 100mm d) 120mm
Last Answer : b) 140mm
Description : If shaft diameter is 40mm, calculate the diameter of sleeves in clamp coupling. a) 100mm b) 80mm c) 60mm d) 40mm
Last Answer : a) 100mm
Description : Does shaft has to be shifted i axial direction to remove clamp coupling. a) Yes b) No
Last Answer : b) No
Description : A muff coupling is connecting two shafts. The torque involved is 650N-m. The shaft diameter is 45mm with length and height of the key being 14mm and 80mm respectively. Find the compressive stress induced in the key. a) 70.1 N/mm2 b) 51.6N/mm2 c) 45.5N/mm2 d) None of the listed
Last Answer : b) 51.6N/mm2
Description : A muff coupling is connecting two shafts. The torque involved is 650N-m. The shaft diameter is 45mm with length and breadth of the key being 14mm and 80mm respectively. Find the shear stress induced in the key. a) 30.2N/mm2 b) 25.8N/mm2 c) 34.4N/mm2 d) None of the listed
Last Answer : b) 25.8N/mm2
Description : A flange coupling is used to connect two shafts A. Which are perfectly aligned B. Which are not in exact alignment C. Have lateral misalignment D. Whose axes intersect at a small angle
Last Answer : A. Which are perfectly aligned
Description : Oldham coupling is used to connect two shafts A. Which are perfectly aligned B. Which are not in exact alignment C. Which have lateral misalignment D. Whose axes intersect at a small angle
Last Answer : C. Which have lateral misalignment
Description : Muff coupling is designed as a ......... A. Thick cylinder B. Thin cylinder C. Solid shaft D. Hollow shaft
Last Answer : D. Hollow shaft
Description : In case of clamp coupling, power is transmitted by means of, (A) Friction force (B) Shear resistance (C) Crushing resistance (D) None of the above
Last Answer : (A) Friction force
Description : While designing a flange coupling, care is taken so that (A) Shaft is the weakest component (B) Bolts are the weakest component (C) Key is the weakest component (D) The flange is the weakest component
Last Answer : (C) Key is the weakest component
Description : A bushed-pin type flange coupling is used (A) For intersecting shafts (B) When the shafts are not in exact alignment (C) For small shafts rotating at slow speeds (D) For parallel shafts
Last Answer : (B) When the shafts are not in exact alignment
Description : In designing a flange coupling, the pitch circle diameter of bolts is taken as (where d = Diameter of the shaft) (A) 2 d (B) 3 d (C) 4 d (D) 5 d
Last Answer : (B) 3 d