Machine Design - Practice Test

[#246] Split nut is a locking device in which

(A) One smaller nut is tightened over main nut and main nut tightened against smaller one by loosening, creating friction jamming

(B) A slot is cut partly in middle of nut and then slot reduced by tightening screw

(C) A hard fibre or nylon cotter is recessed in the nut and becomes threaded as the nut is screwed on the bolt causing a tight grip

(D) Through slots are made at top and a cotter pin is passed through these and a hole in the bolt, and cotter pin splitted and bent in reverse direction at the other end

Correct Answer

(B) A slot is cut partly in middle of nut and then slot reduced by tightening screw

[#247] A riveted joint is a __________ fastening.

(A) Permanent

(B) Temporary

(C) Either A or B

(D) None of these

Correct Answer

(A) Permanent

[#248] The expansion joint is mostly used for pipes which carry steam at __________ pressures.

(A) Low

(B) High

(C) Medium

(D) None of these

Correct Answer

(B) High

[#249] The V-belts are particularly suitable for __________ drives.

(A) Short

(B) Long

(C) Both A and B

(D) None of these

Correct Answer

(A) Short

[#250] A crankshaft is a __________ shaft.

(A) Transmission

(B) Machine

(C) Machine frame

(D) None of these

Correct Answer

(B) Machine

Machine Design - Study Mode

[#246] Split nut is a locking device in which

Correct Answer

[#247] A riveted joint is a __________ fastening.

Correct Answer

[#248] The expansion joint is mostly used for pipes which carry steam at __________ pressures.

Correct Answer

[#249] The V-belts are particularly suitable for __________ drives.

Correct Answer

[#250] A crankshaft is a __________ shaft.

Correct Answer