Nominal diameter of the screw thread is the same as core diameter. a) True b) False

Nominal diameter of the screw thread is the same as core diameter.

a) True

b) False
by

1 Answer

Answer :

b) False
by

Related questions

The largest diameter of external or internal screw thread is called (A) Major diameter (B) Minor diameter (C) Pitch diameter (D) None of the above

Description : The largest diameter of external or internal screw thread is called (A) Major diameter (B) Minor diameter (C) Pitch diameter (D) None of the above

Last Answer : (A) Major diameter

If core diameter of bolt is 13.8cm the it’s nominal diameter is given by? a) 17.27mm b) 15.34mm c) 14.67mm d) 16.34mm

Description : If core diameter of bolt is 13.8cm the it’s nominal diameter is given by? a) 17.27mm b) 15.34mm c) 14.67mm d) 16.34mm

Last Answer : a) 17.27mm

Stress Concentration Factor is the ratio of nominal stress obtained by elementary equations for minimum cross- section and highest value of actual stress near discontinuity. a) True b) False

Description : Stress Concentration Factor is the ratio of nominal stress obtained by elementary equations for minimum cross- section and highest value of actual stress near discontinuity. a) True b) False

Last Answer : b) False

Efficiency of the screw depends upon helix angle but does not depend on friction angle. a) True b) False

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Efficiency of screw depends upon lead of the screw. a) True b) False

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Last Answer : a) True

In manual assembly, cost of screw is higher than the cost of driving a screw. a) True b) False

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Shank is the portion of bolt between the head and the thread. a) True b) False

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What is the approximate nominal diameter for coarse threads? a. d = 1.136 dc b. d = 1.59 dc c. d = 1.19 dc d. d = 0.5 dc

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A screw is specified by (A) Major diameter (B) Minor diameter (C) Pitch diameter (D) Mean diameter

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A screw jack has 4 threads per inch. The mean radius of the thread is 2.338 inches. The mean diameter of the bearing surface under the cap is 3.25 inches. What is the turning moment required to raise the bload of 150 kg ( a.5.61 kg-inch b.50.6 kg-inch c.107 dynes d.30.3 kg-inch e.23.6 kg-inch

Description : A screw jack has 4 threads per inch. The mean radius of the thread is 2.338 inches. The mean diameter of the bearing surface under the cap is 3.25 inches. What is the turning moment required to raise the bload of 150 kg ( a.5.61 kg-inch b.50.6 kg-inch c.107 dynes d.30.3 kg-inch e.23.6 kg-inch

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The shock absorbing capacity of a bolt can be increased by (A) Increasing shank diameter (B) Making shank diameter equal to core diameter of threads (C) Using castle nut in place of ordinary hexagonal nut (D) Using a washer

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The shock absorbing capacity of a bolt can be increased by (A) Increasing stress in shank (B) Increasing stress in core diameter of threads (C) Decreasing stress in shank (D) Decreasing stress in core diameter of threads

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The designation M 36 × 2 means (A) Metric fine threads of 36 mm outside diameter and 2 mm pitch (B) Metric coarse threads of 36 mm outside diameter and 2 mm pitch (C) Metric threads of 36 mm pitch diameter and 2 mm pitch (D) Metric threads of 36 mm core diameter and 2 mm pitch

Description : The designation M 36 × 2 means (A) Metric fine threads of 36 mm outside diameter and 2 mm pitch (B) Metric coarse threads of 36 mm outside diameter and 2 mm pitch (C) Metric threads of 36 mm pitch diameter and 2 mm pitch (D) Metric threads of 36 mm core diameter and 2 mm pitch

Last Answer : (A) Metric fine threads of 36 mm outside diameter and 2 mm pitch

A total permanent deformation of 0.0001 of the ball diameter is taken for considering the static load capacity of the sh (a) True (b) False

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Needles bearing consist of rollers of small diameter and very small length. (a) True (b) False

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Needles bearing consist of rollers of small diameter and very small length. a) True b) False

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A total permanent deformation of 0.0001 of the ball diameter is taken for considering static load capacity of the shaft. a) True b) False

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The spring index is the ratio of wire diameter to mean coil diameter. a) True b) False

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If the lateral force acting on the set screw is large and tends to displace one part with respect to other than which point is recommended? a) Dog Point b) Cone Point c) Window Point d) Cut Point

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If a fastener is threaded into a tapped hole, then the fastener is likely to be called as a) Screw b) Bolt c) Washer d) Screw or bolt

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Maximum possible efficiency of a self-locking screw is a) 50% b) 75% c) 66% d) 33%

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Last Answer : a) 50%

Efficiency of the screw _______ with increase of coefficient of friction. a) decreases b) increases c) has no effect d) cannot be determined

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Threads used in screw fasteners are ______ a. having high strength b. having low efficiency c. single start type d. all of the above

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Which type of screw fasteners are threaded through out its length? a. Cap screws b. Set screws c. Studs d. Tap bolt

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Allen key is used to tighten (A) Cap screw with hexagonal head (B) Cap screw with fillister head (C) Cap screw with hexagonal socket head (D) Cap screw with flat head

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Jam nut is a locking device in which (A) A smaller nut is tightened against main nut creating friction at the contacting surface (B) A split pin is passed through diametrically opposite slots in nut and a hole in bolt and the two ends of split pin are separated and bent back on nut (C) A slot is cut in the middle of nut along the length and a cap screw is provided to tighten the two parts of nut separated by slot (D) An elastic piece is tightened in the nut by a setscrew

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Setscrews are (A) Similar to tap bolts except that a greater variety of shapes of heads are available (B) Slotted for screw driver and generally used with a nut (C) Used to prevent relative motion between parts (D) Similar to studs

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While designing screw threads, adequate length of engaged threads between the screw and nut is provided so as to prevent failure of threads due to (A) Direct shear stress (B) Torsional shear stress (C) Tensile stress (D) Compressive stress

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Castle nut is a locking device in which (A) A smaller nut is tightened against main nut creating friction at the contacting surface (B) A split pin is passed through diametrically opposite slots in nut and a hole in bolt and the two ends of split pin are separated and bent back on nut (C) A slot is cut in the middle of nut along the length and a cap screw is provided to tighten the two parts of nut separated by slot (D) An elastic piece is tightened in the nut by a setscrew

Description : Castle nut is a locking device in which (A) A smaller nut is tightened against main nut creating friction at the contacting surface (B) A split pin is passed through diametrically opposite slots in nut and ... of nut separated by slot (D) An elastic piece is tightened in the nut by a setscrew

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The maximum efficiency of a square threaded screw is (A) (1 - sinφ)/ (1 + sinφ) (B) (1 + sinφ)/ (1 - sinφ)s (C) (1 - sinφ)/ (1 + cosφ) (D) (1 + cosφ)/ (1 - sinφ)

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Last Answer : (A) (1 - sinφ)/ (1 + sinφ)

Transverse fillet weld can be designed using the same equations as of parallel fillet weld. a) True b) False

Description : Transverse fillet weld can be designed using the same equations as of parallel fillet weld. a) True b) False

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Hydrostatic and hydrodynamic lubrication are the same thing. a) True b) False

Description : Hydrostatic and hydrodynamic lubrication are the same thing. a) True b) False

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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

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Knuckle Joint is used to connect the two rods whose axes are coincide or intersect and lies in the same plane. A. True B. False

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Clutch and coupling can be considered to be same. a) True b) False

Description : Clutch and coupling can be considered to be same. a) True b) False

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Solid shaft is costlier than hollow shaft of same weight. a) True b) False

Description : Solid shaft is costlier than hollow shaft of same weight. a) True b) False

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The strength of hollow shaft is more than the strength of solid shaft of same weight. a) True b) False

Description : The strength of hollow shaft is more than the strength of solid shaft of same weight. a) True b) False

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The stiffness of solid shaft is more than the stiffness of hollow shaft with same weight. a) True b) False

Description : The stiffness of solid shaft is more than the stiffness of hollow shaft with same weight. a) True b) False

Last Answer : b) False

Solid shaft is costlier than hollow shaft of same weight. a) True b) False

Description : Solid shaft is costlier than hollow shaft of same weight. a) True b) False

Last Answer : b) False

The strength of hollow shaft is more than the strength of solid shaft of same weight. a) True b) False

Description : The strength of hollow shaft is more than the strength of solid shaft of same weight. a) True b) False

Last Answer : a) True

The stiffness of solid shaft is more than the stiffness of hollow shaft with same weight. a) True b) False

Description : The stiffness of solid shaft is more than the stiffness of hollow shaft with same weight. a) True b) False

Last Answer : b) False

What is the screw thread contact?

Description : What is the screw thread contact?

Last Answer : Need answer

Where can I get a ball screw thread?

Description : Where can I get a ball screw thread?

Last Answer : You can find one online at many different stores. You can try www.precisionscrewthread.com or www.Ball-Screws.Industrial101.com. Ball Screw thread is very advanced and complicated technology. For getting ball screw thread you will need good and advanced CNC machine.

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

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

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Two shafts A and B are made of same material. The diameter of shaft A is twice that of B. The torque transmitted by shaft A will be (A) Twice that of B (B) Four times that of B (C) Eight times that of B (D) Sixteen times that of B

Description : Two shafts A and B are made of same material. The diameter of shaft A is twice that of B. The torque transmitted by shaft A will be (A) Twice that of B (B) Four times that of B (C) Eight times that of B (D) Sixteen times that of B

Last Answer : (C) Eight times that of B

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

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

Keyed joints never lead to stress concentration on shafts. a) True b) False

Description : Keyed joints never lead to stress concentration on shafts. a) True b) False

Last Answer : b) False

Feather key can be used to prevent axial motion between two elements. a) True b) False

Description : Feather key can be used to prevent axial motion between two elements. a) True b) False

Last Answer : b) False

The operation of flywheel is continuous. a) True b) False

Description : The operation of flywheel is continuous. a) True b) False

Last Answer : a) True

Flywheel and governor can be interchanged. a) True b) False

Description : Flywheel and governor can be interchanged. a) True b) False

Last Answer : b) False