# Flywheels MCQ Practice Test

**1. The maximum fluctuation of energy of flywheel is,**

- (A) Difference
between maximum and minimum kinetic energy during the cycle

- (B) Difference
between maximum and mean kinetic energy during the cycle

- (C) Difference
between mean and minimum kinetic energy during the cycle

- (D) Mean
of maximum and minimum kinetic energy during the cycle

**2. For finding out the bending moment for the arm (spoke) of flywheel, the arm is assumed as,**

- (A) A
cantilever beam fixed at the rim and subjected to tangential force at the hub

- (B) A
simply supported beam fixed at hub and rim and carrying uniformly distributed
load

- (C) A
cantilever beam fixed at the hub and subjected to tangential force at the rim

- (D) A
fixed beam fixed at hub and rim and carrying uniformly distributed load

**3. The maximum fluctuation of speed of flywheel is,**

- (A) Difference
between maximum and minimum speeds during the cycle

- (B) Difference
between maximum and mean speeds during the cycle

- (C) Difference
between mean and minimum speeds during the cycle

- (D) Mean
of maximum and minimum speeds during the cycle

**4. The coefficient of fluctuation of speed of flywheel is given by,**

- (A) (

*ω*

_{max}-

*ω*

_{min})/ω

- (B) 2 (

*ω*

_{max}-

*ω*

_{min})/ (

*ω*

_{max}+

*ω*

_{min})

- (C) 2 (

*n*

_{max}-

*n*

_{min})/ (

*n*

_{max}+

*n*

_{min})

- (D) Any
one of the above

**5. A flywheel is used,**

- (A) To
store and release energy when required during the work cycle

- (B) To
reduce the power capacity of electric motor

- (C) To
reduce the amplitude of speed fluctuations

- (D) Any
one of above functions

**6. The coefficient of fluctuation of energy of flywheel is,**

- (A) Ratio
of maximum fluctuation of energy to work done per cycle

- (B) Ratio
of to work done per cycle to maximum fluctuation of energy

- (C) Difference
between maximum and minimum kinetic energy during the cycle

- (D) Ratio
of maximum and minimum kinetic energy during the cycle

**7. The cross-section of the flywheel arm is,**

- (A) I section

- (B) Rectangular

- (C) Elliptical

- (D) Circular

**8. The rim of the flywheel is subjected to,**

- (A) Direct
tensile stress and bending stress

- (B) Torsional
shear stress and bending stress

- (C) Direct
shear stress and bending stress

- (D) Compressive
stress and bending stress

**9. The spokes of the flywheel are subjected to,**

- (A) Direct
shear stress

- (B) Torsional
shear stress

- (C) Tensile
stress

- (D) Compressive
stress

**10. The coefficient of fluctuation of speed of flywheel is,**

- (A) Ratio
of maximum and minimum speeds during the cycle

- (B) Ratio
of maximum fluctuation of speed to the mean speed

- (C) Ratio
of mean speed to maximum fluctuation of speed during the cycle

- (D) Sum
of maximum fluctuation of speed and the mean speed

**11. The hub diameter of the flywheel is taken as,**

- (A) 2.5 (shaft
diameter)

- (B) 1.5 (shaft
diameter)

- (C) 4 (shaft
diameter)

- (D) 2 (shaft
diameter)

**12. The tensile stress in the rim of the flywheel is given by,**

**Where,**

*ρ*is mass density and*v*is linear velocity at the mean radius of the rim.- (A)

*ρv*

^{2}/2

- (B)

*πρv*

^{2}

- (C)

*ρv*

^{2}

- (D) 2

*ρv*

^{2}

**13. A flywheel is used,**

- (A) To
limit the fluctuations of speed during each cycle

- (B) To
control the mean speed of the engine

- (C) To
maintain a constant speed

- (D) To
come into action when the speed varies

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