In a locomotive, the maximum magnitude of the unbalanced force along the perpendicular to the line of stroke, is known as

Question

In a locomotive, the maximum magnitude of the unbalanced force along the perpendicular to the line of stroke, is known as

A. Tractive force

B. Swaying couple

C. Hammer blow

D. None of these

Share this question with your friends

Show all Theory of Machines MCQ

Comment

Creep in belt drive is due to

A. Material of the pulley

B. Material of the belt

C. Larger size of the driver pulley

D. Uneven extensions and contractions due to varying tension

Discuss this answer

When a body is subjected to transverse vibrations, the stress induced in a body will be

A. Shear stress

B. Bending stress

C. Tensile stress

D. Compressive stress

Discuss this answer

Which of the following statements regarding laws governing the friction between dry surfaces are correct?

A. The friction force is dependent on the materials of the contact surfaces.

B. The friction force is directly proportional to the normal force.

C. The friction force is independent of me area of contact.

D. All of the above

Discuss this answer

In a four stroke I.C. engine, the turning moment during the compression stroke is

A. Positive throughout

B. Negative throughout

C. Positive during major portion of the stroke

D. Negative during major portion of the stroke

Discuss this answer

When the addenda on pinion and wheel is such that the path of approach and path of recess are half of their maximum possible values, then the length of the path of contact is given by (where r = Pitch circle radius of pinion, R = Pitch circle radius of wheel, and φ = Pressure angle)

A. [(r² + R²) cosφ]/2

B. [(r² + R²) sinφ]/2

C. [(r + R) cosφ]/2

D. [(r + R) sinφ]/2

Discuss this answer

Which of the following statement is correct?

A. The primary unbalanced force is less than the secondary unbalanced force.

B. The primary unbalanced force is maximum twice in one revolution of the crank.

C. The unbalanced force due to reciprocating masses varies in magnitude and direction both.

D. The magnitude of swaying couple in locomotives is inversely proportional to the distance between the two cylinder centre lines

Discuss this answer

Pulley in a belt drive acts as

A. Cylindrical pair

B. Turning pair

C. Rolling pair

D. Sliding pair

Discuss this answer

In a gear having involute teeth, the normal to the involute is a tangent to the

A. Pitch circle

B. Base circle

C. Addendum circle

D. Dedendum circle

Discuss this answer

Consider the following mechanisms:
1. Oscillating cylinder engine mechanism
2. Toggle mechanism
3. Radial cylinder engine mechanism
4. Quick return mechanism Which of the above are inversions of slider crank mechanism?

A. 1, 2 and 4

B. 2, 3 and 4

C. 1, 2 and 3

D. 1, 3 and 4

Discuss this answer

Maximum fluctuation of energy in a flywheel is equal to [where I = Mass moment of inertia of the flywheel, E = Maximum fluctuation of energy, CS = Coefficient of fluctuation of speed, and ω = Mean angular speed = (ω₁ + ω₂)/2]

A. I.ω.(ω₁ - ω₂)

B. I.ω².C_S

C. 2.E.C_S

D. All of these

Discuss this answer

The face of the tooth is the

A. Surface of the top of tooth

B. Surface of tooth above the pitch surface

C. Width of tooth below the pitch surface

D. Width of tooth measured along the pitch circle

Discuss this answer

Hammer blow

A. Is the maximum horizontal unbalanced force caused by the mass provided to balance the reciprocating masses.

B. Is the maximum vertical unbalanced force caused by the mass added to balance the reciprocating masses

C. Varies as the square root of the speed

D. Varies inversely with the square of the speed

Discuss this answer

In a steam engine, the link constitutes a

A. Piston, piston rod and crosshead

B. Connecting rod with big and small end brasses, caps and bolts

C. Crank pin, crankshaft and flywheel

D. All of the above

Discuss this answer

The critical speed of a shaft in revolution per second is __________ as that of natural frequency of transverse vibration.

A. Same

B. Different

C. Unpredictable

D. None of these

Discuss this answer

If the radius of gyration of a compound pendulum about an axis through e.g. is more, then its frequency of oscillation will be

A. Less

B. More

C. Same

D. Data are insufficient to determine same

Discuss this answer

Pitch point of a cam is

A. A point on the pitch curve having minimum pressure angle

B. A point on the pitch curve having maximum pressure angle

C. Any point on the pitch curve

D. Any point on the pitch circle

Discuss this answer

In S.H.M., acceleration is proportional to

A. Velocity

B. Displacement

C. Rate of change of velocity

D. All of the above

Discuss this answer

The velocity of the belt for maximum power is (where m = Mass of the belt in kg per metre length)

A. T/3

B. (T.g)/3

C. √(T/3m)

D. √(3m/T)

Discuss this answer

In a locomotive, the maximum magnitude of the unbalanced force along the perpendicular to the line of stroke, is known as

A. Tractive force

B. Swaying couple

C. Hammer blow

D. None of these

Discuss this answer

In a Hartnell governor, the stiffness of the spring is given by (where S1 and S2 = Spring forces exerted on the sleeve at max. and min. radii of rotation, and h = Compression of the spring)

A. (S₁ + S₂)/h

B. (S₁ - S₂)/h

C. (S₁ + S₂)/2h

D. (S₁ - S₂)/2h

Discuss this answer

Transmission of power from the engine to the rear axle of an automobile is by means of

A. Compound gears

B. Worm and wheel method

C. Hooke's joint

D. Crown gear

Discuss this answer

Open pairs are those which have

A. Point or line contact between the two elements when in motion

B. Surface contact between the two elements when in motion

C. Elements of pairs not held together mechanically

D. Two elements that permit relative motion

Discuss this answer

In Meyer's expansion valve, the main valve is driven by an eccentric having an angle of advance from

A. 10°-15°

B. 15°-25°

C. 25°-30°

D. 30°-40°

Discuss this answer

Klein's construction can be used to determine acceleration of various parts when the crank is at

A. Inner dead centre

B. Outer dead centre

C. Right angles to the link of the stroke

D. All of the above

Discuss this answer

The periodic time is given by (where ω = Angular velocity of the particle in rad/s)

A. ω/2π

B. 2π/ω

C. ω × 2π

D. π/ω

Discuss this answer

The gears are termed as medium velocity gears, if their peripheral velocity is

A. 1-3 m/s

B. 3-15 m/s

C. 15-30 m/s

D. 30-50 m/s

Discuss this answer

If ω/ω_n is very high for a body vibrating under steady state vibrations, the phase angle for all values of damping factors, will tend to approach

A. 0°

B. 90°

C. 180°

D. 360°

Discuss this answer

In a screw jack, the effort required to lift the load W is given by (where α = Helix angle, and φ = Angle of friction)

A. P = W tan(α - φ)

B. P = W tan(α + φ)

C. P = W tan(φ - α)

D. P = W cos(α + φ)

Discuss this answer

The Klein's method of construction for reciprocating engine mechanism

A. Is a simplified version of instantaneous centre method

B. Utilises a quadrilateral similar to the diagram of mechanism for reciprocating engine

C. Enables determination of coriolis component

D. Is based on the acceleration diagram

Discuss this answer

When the belt is stationary, it is subjected to some tension known as initial tension. The value of this tension is equal to the

A. Tension in the tight side of the belt

B. Tension in the slack side of the belt

C. Sum of the tensions on the tight side and slack side of the belt

D. Average tension of the tight side and slack side of the belt

Discuss this answer

Accepted Answer

C. Hammer blow

In a locomotive, the maximum magnitude of the unbalanced force along the perpendicular to the line of stroke, is known as

Correct Answer :

Show all Theory of Machines MCQ

Related Questions

Creep in belt drive is due to

When a body is subjected to transverse vibrations, the stress induced in a body will be

Which of the following statements regarding laws governing the friction between dry surfaces are correct?

In a four stroke I.C. engine, the turning moment during the compression stroke is

When the addenda on pinion and wheel is such that the path of approach and path of recess are half of their maximum possible values, then the length of the path of contact is given by (where r = Pitch circle radius of pinion, R = Pitch circle radius of wheel, and φ = Pressure angle)

Which of the following statement is correct?

Pulley in a belt drive acts as

In a gear having involute teeth, the normal to the involute is a tangent to the

Consider the following mechanisms:
1. Oscillating cylinder engine mechanism
2. Toggle mechanism
3. Radial cylinder engine mechanism
4. Quick return mechanism Which of the above are inversions of slider crank mechanism?

Maximum fluctuation of energy in a flywheel is equal to [where I = Mass moment of inertia of the flywheel, E = Maximum fluctuation of energy, CS = Coefficient of fluctuation of speed, and ω = Mean angular speed = (ω₁ + ω₂)/2]

The face of the tooth is the

Hammer blow

In a steam engine, the link constitutes a

The critical speed of a shaft in revolution per second is __________ as that of natural frequency of transverse vibration.

If the radius of gyration of a compound pendulum about an axis through e.g. is more, then its frequency of oscillation will be

Pitch point of a cam is

In S.H.M., acceleration is proportional to

The velocity of the belt for maximum power is (where m = Mass of the belt in kg per metre length)

In a locomotive, the maximum magnitude of the unbalanced force along the perpendicular to the line of stroke, is known as

In a Hartnell governor, the stiffness of the spring is given by (where S1 and S2 = Spring forces exerted on the sleeve at max. and min. radii of rotation, and h = Compression of the spring)

Transmission of power from the engine to the rear axle of an automobile is by means of

Open pairs are those which have

In Meyer's expansion valve, the main valve is driven by an eccentric having an angle of advance from

Klein's construction can be used to determine acceleration of various parts when the crank is at

The periodic time is given by (where ω = Angular velocity of the particle in rad/s)

The gears are termed as medium velocity gears, if their peripheral velocity is

If ω/ω_n is very high for a body vibrating under steady state vibrations, the phase angle for all values of damping factors, will tend to approach

In a screw jack, the effort required to lift the load W is given by (where α = Helix angle, and φ = Angle of friction)

The Klein's method of construction for reciprocating engine mechanism

When the belt is stationary, it is subjected to some tension known as initial tension. The value of this tension is equal to the

Also checkout

In a locomotive, the maximum magnitude of the unbalanced force along the perpendicular to the line of stroke, is known as

Correct Answer :

Show all Theory of Machines MCQ

Related Questions

Creep in belt drive is due to

When a body is subjected to transverse vibrations, the stress induced in a body will be

Which of the following statements regarding laws governing the friction between dry surfaces are correct?

In a four stroke I.C. engine, the turning moment during the compression stroke is

When the addenda on pinion and wheel is such that the path of approach and path of recess are half of their maximum possible values, then the length of the path of contact is given by (where r = Pitch circle radius of pinion, R = Pitch circle radius of wheel, and φ = Pressure angle)

Which of the following statement is correct?

Pulley in a belt drive acts as

In a gear having involute teeth, the normal to the involute is a tangent to the

Consider the following mechanisms:1. Oscillating cylinder engine mechanism2. Toggle mechanism3. Radial cylinder engine mechanism4. Quick return mechanism Which of the above are inversions of slider crank mechanism?

Maximum fluctuation of energy in a flywheel is equal to [where I = Mass moment of inertia of the flywheel, E = Maximum fluctuation of energy, CS = Coefficient of fluctuation of speed, and ω = Mean angular speed = (ω₁ + ω₂)/2]

The face of the tooth is the

Hammer blow

In a steam engine, the link constitutes a

The critical speed of a shaft in revolution per second is __________ as that of natural frequency of transverse vibration.

If the radius of gyration of a compound pendulum about an axis through e.g. is more, then its frequency of oscillation will be

Pitch point of a cam is

In S.H.M., acceleration is proportional to

The velocity of the belt for maximum power is (where m = Mass of the belt in kg per metre length)

In a locomotive, the maximum magnitude of the unbalanced force along the perpendicular to the line of stroke, is known as

In a Hartnell governor, the stiffness of the spring is given by (where S1 and S2 = Spring forces exerted on the sleeve at max. and min. radii of rotation, and h = Compression of the spring)

Transmission of power from the engine to the rear axle of an automobile is by means of

Open pairs are those which have

In Meyer's expansion valve, the main valve is driven by an eccentric having an angle of advance from

Klein's construction can be used to determine acceleration of various parts when the crank is at

The periodic time is given by (where ω = Angular velocity of the particle in rad/s)

The gears are termed as medium velocity gears, if their peripheral velocity is

If ω/ωn is very high for a body vibrating under steady state vibrations, the phase angle for all values of damping factors, will tend to approach

In a screw jack, the effort required to lift the load W is given by (where α = Helix angle, and φ = Angle of friction)

The Klein's method of construction for reciprocating engine mechanism

When the belt is stationary, it is subjected to some tension known as initial tension. The value of this tension is equal to the

Also checkout

Consider the following mechanisms:
1. Oscillating cylinder engine mechanism
2. Toggle mechanism
3. Radial cylinder engine mechanism
4. Quick return mechanism Which of the above are inversions of slider crank mechanism?

If ω/ω_n is very high for a body vibrating under steady state vibrations, the phase angle for all values of damping factors, will tend to approach