Multiple Choice Questions (MCQ) on Flywheel
11-Reciprocal of Coefficient of fluctuation of speed is called
(A) Fluctuation of speed
(B) Coefficient of steadiness
(C) Maximum fluctuation of speed
(D) None of the above
12-For four stroke engine, work done/cycle is
(where Tm is the mean torque)
(A) πTm
(B) 2πTm
(C) 3πTm
(D) 4πTm
13-The mass moment of inertia of a solid circular disk is given by
(A) mR2/2
(B) mR2/3
(C) 2mR2/3
(D) mR2/4
14-The coefficient of fluctuation of energy =
(A) Maximum fluctuation of energy / work done per cycle
(B) Fluctuation of energy / Work done per cycle
(C) Maximum fluctuation of energy / Mean speed
(D) Fluctuation of energy / Mean speed
15-The coefficient of fluctuation of speed, when the maximum and minimum speeds are 300rpm and 290 rpm
(A) 0.034
(B) 0.017
(C) 0.008
(D) 0/004
16-Maximum fluctuation of energy =
(A) Max. KE – Min. KE
(B) Max. KE + Min. KE
(C) (Max. KE – Min. KE)/2
(D) (Max. KE + Min. KE)/2
17-In case of solid disk flywheel, the mass (m) of disk is given by
(A) πR2tρ
(B) (π/2)R2tρ
(C) 3πR2tρ
(D) (3/2)πR2tρ
18-For two stroke engine, work done/cycle is
(where Tm is the mean torque)
(A) πTm
(B) 2πTm
(C) 3πTm
(D) 4πTm
19-The flywheel is accelerated when
(A) Driving torque > Load torque
(B) Driving torque < Load torque
(C) Driving torque = Load torque
(D) Any of the above
20-Which of the following is (are) true?
(A) Cast iron has poor tensile strength compared to steel
(B) Failure of cast iron flywheel is sudden and total
(C) Machinability of cast iron flywheel is poor compared to steel flywheel
(D) All of the above
ANSWERS:
11-(B), 12-(D), 13-(A), 14-(A), 15-(A), 16-(A), 17-(A), 18-(B), 19-(A), 20-(D)