Reciprocal of coefficient of fluctuation of speed is called 1. fluctuation of energy 2. fluctuation of speed 3. maximum fluctuation of speed 4. coefficient of fluctuation of speed

Reciprocal of coefficient of fluctuation of speed is called

1. fluctuation of energy

2. fluctuation of speed

3. maximum fluctuation of speed

4. coefficient of fluctuation of speed
by

1 Answer

Answer :

4. coefficient of fluctuation of speed
by

Related questions

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

Description : 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

Last Answer : (B) Coefficient of steadiness

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

Description : 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

Last Answer : (A) Maximum fluctuation of energy / work done per cycle

The ratio of maximum fluctuation of speed to the mean speed is called (A) Fluctuation of speed (B) Maximum fluctuation of speed (C) Coefficient of fluctuation of speed (D) None of the above

Description : The ratio of maximum fluctuation of speed to the mean speed is called (A) Fluctuation of speed (B) Maximum fluctuation of speed (C) Coefficient of fluctuation of speed (D) None of the above

Last Answer : (C) Coefficient of fluctuation of speed

The difference the maximum and minimum speeds during a cycle is called (A) Fluctuation of speed (B) Maximum fluctuation of speed (C) Coefficient of fluctuation of speed (D) None of the above

Description : The difference the maximum and minimum speeds during a cycle is called (A) Fluctuation of speed (B) Maximum fluctuation of speed (C) Coefficient of fluctuation of speed (D) None of the above

Last Answer : (B) Maximum fluctuation of speed

Calculate the coefficient of fluctuation of speed if maximum speed is 2500rpm and minimum speed is 1800rpm. 1. 1.44 2. 1.33 3. 0.33 4. 0.44

Description : Calculate the coefficient of fluctuation of speed if maximum speed is 2500rpm and minimum speed is 1800rpm. 1. 1.44 2. 1.33 3. 0.33 4. 0.44

Last Answer : 3. 0.33

The coefficient of fluctuation of speed of flywheel is 1. ratio of maximum and minimum speeds during the cycle 2. ratio of maximum fluctuation of speed to the mean speed 3. ratio of mean speed to maximum fluctuation of speed during the cycle 4. sum of maximum fluctuation of speed and the mean speed

Description : The coefficient of fluctuation of speed of flywheel is 1. ratio of maximum and minimum speeds during the cycle 2. ratio of maximum fluctuation of speed to the mean speed 3. ratio of mean ... maximum fluctuation of speed during the cycle 4. sum of maximum fluctuation of speed and the mean speed

Last Answer : 2. ratio of maximum fluctuation of speed to the mean speed

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

Description : 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

Last Answer : (A) 0.034

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

Description : 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 ... maximum fluctuation of speed during the cycle (D) Sum of maximum fluctuation of speed and the mean speed

Last Answer : (B) Ratio of maximum fluctuation of speed to the mean speed

The coefficient of fluctuation of energy of flywheel is 1. ratio of maximum fluctuation of energy to work done per cycle 2. ratio of to work done per cycle to maximum fluctuation of energy 3. difference between maximum and minimum kinetic energy during the cycle 4. ratio of maximum and minimum kinetic energy during the cycle

Description : The coefficient of fluctuation of energy of flywheel is 1. ratio of maximum fluctuation of energy to work done per cycle 2. ratio of to work done per cycle to maximum fluctuation of energy ... minimum kinetic energy during the cycle 4. ratio of maximum and minimum kinetic energy during the cycle

Last Answer : 1. ratio of maximum fluctuation of energy to work done per cycle

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

Description : 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 ... minimum kinetic energy during the cycle (D) Ratio of maximum and minimum kinetic energy during the cycle

Last Answer : (A) Ratio of maximum fluctuation of energy to work done per cycle

The coefficient of fluctuation of speed of Flywheel is given by 1. (N1-N2)/N 2. (N1+N2)/N 3. (N1-N2) x N

Description : The coefficient of fluctuation of speed of Flywheel is given by 1. (N1-N2)/N 2. (N1+N2)/N 3. (N1-N2) x N

Last Answer : 1. (N1-N2)/N

The coefficient of fluctuation of speed of flywheel is given by, (A) (ωmax - ωmin)/ω (B) 2 (ωmax - ωmin)/ (ωmax + ωmin) (C) 2 (nmax - nmin)/ (nmax + nmin) (D) Any one of the above

Description : The coefficient of fluctuation of speed of flywheel is given by, (A) (ωmax - ωmin)/ω (B) 2 (ωmax - ωmin)/ (ωmax + ωmin) (C) 2 (nmax - nmin)/ (nmax + nmin) (D) Any one of the above

Last Answer : (D) Any one of the above

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

Description : 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 ... and minimum speeds during the cycle (D) Mean of maximum and minimum speeds during the cycle

Last Answer : (A) Difference between maximum and minimum speeds during the cycle

A flywheel of moment of inertia 9.8kgm 2 fluctuates by 30 rpm for a fluctuation in energy of 1936 joules. The means speed of flywheel is (in rpm) 1. 600 2. 900 3. 968 4. 2940

Description : A flywheel of moment of inertia 9.8kgm 2 fluctuates by 30 rpm for a fluctuation in energy of 1936 joules. The means speed of flywheel is (in rpm) 1. 600 2. 900 3. 968 4. 2940

Last Answer : 1. 600

A flywheel connected to a punching machine has to supply energy of 400 Nm while running at a mean angular speed of 20 rad/s. If the total fluctuation of speed is not exceed to in kgm 2 is 1. 25 2. 50 3. 100 4. 125

Description : A flywheel connected to a punching machine has to supply energy of 400 Nm while running at a mean angular speed of 20 rad/s. If the total fluctuation of speed is not exceed to in kgm 2 is 1. 25 2. 50 3. 100 4. 125

Last Answer : 1. 25

Maximum fluctuation of energy = 1. Max KE – Min KE 2. Max KE + Min KE 3. Max KE > Min KE 4. Max KE < Min KE

Description : Maximum fluctuation of energy = 1. Max KE – Min KE 2. Max KE + Min KE 3. Max KE > Min KE 4. Max KE < Min KE

Last Answer : 1. Max KE – Min KE

The maximum fluctuation of energy of flywheel is 1. difference between maximum and minimum kinetic energy during the cycle 2. difference between maximum and mean kinetic energy during the cycle 3. difference between mean and minimum kinetic energy during the cycle 4. mean of maximum and minimum kinetic energy during the cycle

Description : The maximum fluctuation of energy of flywheel is 1. difference between maximum and minimum kinetic energy during the cycle 2. difference between maximum and mean kinetic energy during the cycle 3. ... kinetic energy during the cycle 4. mean of maximum and minimum kinetic energy during the cycle

Last Answer : 1. difference between maximum and minimum kinetic energy during the cycle

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

Description : 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

Last Answer : (A) Max. KE – Min. KE

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

Description : 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 ... kinetic energy during the cycle (D) Mean of maximum and minimum kinetic energy during the cycle

Last Answer : (A) Difference between maximum and minimum kinetic energy during the cycle

A flywheel is used 1. to limit the fluctuation of speed during each cycle 2. to control the mean speed of the engine 3. to maintain a constant speed 4. to come into action when the speed varies

Description : A flywheel is used 1. to limit the fluctuation of speed during each cycle 2. to control the mean speed of the engine 3. to maintain a constant speed 4. to come into action when the speed varies

Last Answer : 1. to limit the fluctuation of speed during each cycle

In an oil-lubricated journal bearing, coefficient of friction between the journal and the bearing. [IES-1995] (a) Remains constant at all speeds. (b) is minimum at zero speed and increases monotonically with increase in speed. (c) is maximum at zero speed and decreases monotonically with increase in speed. (d) becomes minimum at an optimum speed and then increases with further increase in speed.

Description : In an oil-lubricated journal bearing, coefficient of friction between the journal and the bearing. [IES-1995] (a) Remains constant at all speeds. (b) is minimum at zero speed and increases ... speed. (d) becomes minimum at an optimum speed and then increases with further increase in speed.

Last Answer : (d) becomes minimum at an optimum speed and then increases with further increase in speed.

Satisfactory hydrodynamic film in a journal bearing is formed when (a) Journal speed is low; unit pressure on the bearing is high and viscosity of lubricant used is low [IES-2006] (b) Journal speed is low; unit pressure on the bearing is low and viscosity of lubricant used is low (c) Journal speed is high; unit pressure on the bearing is high and viscosity of lubricant used is high (d) Appropriate combination of journal speed, unit pressure on bearing and lubricant viscosity exists resulting in low coefficient of friction

Description : Satisfactory hydrodynamic film in a journal bearing is formed when (a) Journal speed is low; unit pressure on the bearing is high and viscosity of lubricant used is low [IES-2006] ... journal speed, unit pressure on bearing and lubricant viscosity exists resulting in low coefficient of friction

Last Answer : (c) Journal speed is high; unit pressure on the bearing is high and viscosity of lubricant used is high

Consider tile following statements: [IES-1993; 2002; 2006] Radius of friction circle for a journal bearing depends upon 1. Coefficient of friction 2. Radius of the journal 3. Angular speed of rotation of the shaft Which of the statements given above are correct? (a) 1,2 and 3 (b) Only 1 and 2 (c) Only 2 and 3 (d) Only 1 and 3

Description : Consider tile following statements: [IES-1993; 2002; 2006] Radius of friction circle for a journal bearing depends upon 1. Coefficient of friction 2. Radius of the journal 3. Angular speed of rotation of the shaft Which of the ... ) 1,2 and 3 (b) Only 1 and 2 (c) Only 2 and 3 (d) Only 1 and 3

Last Answer : (b) Only 1 and 2

Increase in values of which of the following results in an increase of the coefficient of friction in a hydrodynamic bearing? [IES 2007] 1. Viscosity of the oil. 2. Clearance between shaft and bearing. 3. Shaft speed. Select the using the code given below: (a) 1 and 2 only (b) 1 and 3 only (c) 2 and 3 only (d) 1, 2 and 3

Description : Increase in values of which of the following results in an increase of the coefficient of friction in a hydrodynamic bearing? [IES 2007] 1. Viscosity of the oil. 2. Clearance between shaft and bearing. 3. Shaft speed. Select the ... 1 and 2 only (b) 1 and 3 only (c) 2 and 3 only (d) 1, 2 and 3

Last Answer : (b) 1 and 3 only

Define coefficient of fluctuation of energy.

Description : Define coefficient of fluctuation of energy. 

Last Answer : Definition of Coefficient of Fluctuation of Energy: It may be defined as the ratio of the maximum fluctuation of energy to the work done per cycle. Mathematically it is expressed as; 

Assertion (A): Oil as a cutting fluid result in a lower coefficient of friction. Reason (R): Oil forms a thin liquid film between the tool face and chip, and it provides 'hydrodynamic lubrication'. [IES- 2000] (a) Both A and R are individually true and R is the correct explanation of A (b) Both A and R are individually true but R is not the correct explanation of A (c) A is true but R is false (d) A is false but R is true

Description : Assertion (A): Oil as a cutting fluid result in a lower coefficient of friction. Reason (R): Oil forms a thin liquid film between the tool face and chip, and it provides 'hydrodynamic lubrication'. [IES- 2000] (a ... explanation of A (c) A is true but R is false (d) A is false but R is true

Last Answer : (c) A is true but R is false

Which of the following are not true for petroff’s equation? a) Shaft is considered concentric with the bearing b) Bearing is subjected to light load c) Is used to find coefficient of friction d) Frictional torque is given by fpr2l

Description : Which of the following are not true for petroff’s equation? a) Shaft is considered concentric with the bearing b) Bearing is subjected to light load c) Is used to find coefficient of friction d) Frictional torque is given by fpr2l

Last Answer : d) Frictional torque is given by fpr2l

In trapezoidal threads, f (coefficient of friction) can be taken as a) f sec θ b) f cos θ c) f sin θ d) f cosec θ

Description : In trapezoidal threads, f (coefficient of friction) can be taken as a) f sec θ b) f cos θ c) f sin θ d) f cosec θ

Last Answer : a) f sec θ

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

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

Last Answer : a) decreases

Self-locking takes place when a) Coefficient of friction is equal to or greater than the tangent of the helix angle b) Coefficient of friction is lesser than or equal to the tangent of the helix angle c) Coefficient of friction is equal to or greater than the tangent of the helix angle d) None of the mentioned

Description : Self-locking takes place when a) Coefficient of friction is equal to or greater than the tangent of the helix angle b) Coefficient of friction is lesser than or equal to the tangent of the helix ... friction is equal to or greater than the tangent of the helix angle d) None of the mentioned

Last Answer : c) Coefficient of friction is equal to or greater than the tangent of the helix angle

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

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

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

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

Different types of bearings are designed to operate at different operating speeds. Speed is specified as the maximum (a) rpm (b) metres/second (c) metres/minute (d) metres/hour

Description : Different types of bearings are designed to operate at different operating speeds. Speed is specified as the maximum (a) rpm (b) metres/second (c) metres/minute (d) metres/hour

Last Answer : (b) metres/second

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

Description : 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

Last Answer : (D) Any one of above functions

Which of the following are functions of flywheel? a) Store and release energy during work cycle b) Reduce power capacity of the electric motor c) Reduce amplitude of speed fluctuations d) All of the listed

Description : Which of the following are functions of flywheel? a) Store and release energy during work cycle b) Reduce power capacity of the electric motor c) Reduce amplitude of speed fluctuations d) All of the listed

Last Answer : d) All of the listed

Among maximum shear stress theory and distortion energy theory, which gives the higher value shear yield strength? a) Maximum shear stress theory b) Distortion energy theory c) Both give equal values d) Vary from material to material

Description : Among maximum shear stress theory and distortion energy theory, which gives the higher value shear yield strength? a) Maximum shear stress theory b) Distortion energy theory c) Both give equal values d) Vary from material to material

Last Answer : b) Distortion energy theory

The region of safety for biaxial stresses is of which shape in the case of maximum distortion energy theorem. a) Ellipse b) Circle c) Rectangle d) Square

Description : The region of safety for biaxial stresses is of which shape in the case of maximum distortion energy theorem. a) Ellipse b) Circle c) Rectangle d) Square

Last Answer : a) Ellipse

A transmission shaft subjected to pure bending moment should be designed on the basis of (A) Maximum principal stress theory (B) Maximum shear stress theory (C) Distortion energy theory (D) Goodman or Soderberg diagrams

Description : A transmission shaft subjected to pure bending moment should be designed on the basis of (A) Maximum principal stress theory (B) Maximum shear stress theory (C) Distortion energy theory (D) Goodman or Soderberg diagrams

Last Answer : (A) Maximum principal stress theory

Among maximum shear stress theory and distortion energy theory, which gives the higher value shear yield strength? a) Maximum shear stress theory b) Distortion energy theory c) Both give equal values d) Vary from material to material

Description : Among maximum shear stress theory and distortion energy theory, which gives the higher value shear yield strength? a) Maximum shear stress theory b) Distortion energy theory c) Both give equal values d) Vary from material to material

Last Answer : b) Distortion energy theory

The region of safety for biaxial stresses is of which shape in the case of maximum distortion energy theorem. a) Ellipse b) Circle c) Rectangle d) Square

Description : The region of safety for biaxial stresses is of which shape in the case of maximum distortion energy theorem. a) Ellipse b) Circle c) Rectangle d) Square

Last Answer : a) Ellipse

For a homogeneous & isotropic body under hydrostatic pressure, which theory of elastic failure does not fail (a) Firstly Maximum Principal Theory (b) Secondly Maximum Shear Stress Theory (c) Thirdly Maximum Principal Energy Theory (d) None

Description : For a homogeneous & isotropic body under hydrostatic pressure, which theory of elastic failure does not fail (a) Firstly Maximum Principal Theory (b) Secondly Maximum Shear Stress Theory (c) Thirdly Maximum Principal Energy Theory (d) None

Last Answer : (a) Firstly Maximum Principal Theory

For a homogeneous & isotropic body under hydrostatic pressure, which theory of elastic failure fails (a) Firstly Maximum Principal Theory (b) Secondly Maximum Principal strain Theory (c) Thirdly Maximum Principal Energy Theory (d) None

Description : For a homogeneous & isotropic body under hydrostatic pressure, which theory of elastic failure fails (a) Firstly Maximum Principal Theory (b) Secondly Maximum Principal strain Theory (c) Thirdly Maximum Principal Energy Theory (d) None

Last Answer : (c) Thirdly Maximum Principal Energy Theory

Under complex loading, if elastic limit reaches in tension, then failure occurs due to (a) Firstly Maximum principal strain theory (b) Secondly Maximum principal theory of strain energy (c) Thirdly Maximum Principal stress theory (d) None

Description : Under complex loading, if elastic limit reaches in tension, then failure occurs due to (a) Firstly Maximum principal strain theory (b) Secondly Maximum principal theory of strain energy (c) Thirdly Maximum Principal stress theory (d) None

Last Answer : (c) Thirdly Maximum Principal stress theory

Under complex loading, if elastic limit reaches in tension, then failure occurs due to (a) Firstly Maximum principal strain theory (b) Secondly Maximum principal theory of strain energy (c) Thirdly Maximum shear stress theory (d) None

Description : Under complex loading, if elastic limit reaches in tension, then failure occurs due to (a) Firstly Maximum principal strain theory (b) Secondly Maximum principal theory of strain energy (c) Thirdly Maximum shear stress theory (d) None

Last Answer : (d) None

A ductile material may not meet a failure if it has been tested for the theories of failure (a) Firstly Maximum Shear Stress Theory (b) Secondly Maximum Shear Strain Energy Theory (c) Both (a) & (b) (d) None

Description : A ductile material may not meet a failure if it has been tested for the theories of failure (a) Firstly Maximum Shear Stress Theory (b) Secondly Maximum Shear Strain Energy Theory (c) Both (a) & (b) (d) None

Last Answer : (c) Both (a) & (b)

A ductile material may not meet a failure if it has been tested for the theories of failure (a) Firstly Maximum Principal Theory (b) Secondly Maximum Principal Strain Theory (c) Thirdly Maximum principal strain energy theory (d) None

Description : A ductile material may not meet a failure if it has been tested for the theories of failure (a) Firstly Maximum Principal Theory (b) Secondly Maximum Principal Strain Theory (c) Thirdly Maximum principal strain energy theory (d) None

Last Answer : (d) None

Maximum total strain energy theory is applicable to (a) Ductile materials (b) Brittle materials (c) Composite materials (d) None

Description : Maximum total strain energy theory is applicable to (a) Ductile materials (b) Brittle materials (c) Composite materials (d) None

Last Answer : (a) Ductile materials

Maximum total strain energy theory is applicable to (a) Ductile materials (b) Brittle materials (c) Composite materials (d) None

Description : Maximum total strain energy theory is applicable to (a) Ductile materials (b) Brittle materials (c) Composite materials (d) None

Last Answer : (b) Brittle materials

Maximum total strain energy is equal to (a) (σ1 2 +σ2 2 )/2E (b) ( σ1 2 +σ2 2 + 2μ σ1 σ2)/2E (c) ( σ1 2 +σ2 2 — 2μ σ1 σ2)/2E (d) None

Description : Maximum total strain energy is equal to (a) (σ1 2 +σ2 2 )/2E (b) ( σ1 2 +σ2 2 + 2μ σ1 σ2)/2E (c) ( σ1 2 +σ2 2 — 2μ σ1 σ2)/2E (d) None

Last Answer : (c) ( σ1 2 +σ2 2 — 2μ σ1 σ2)/2E