The effect of hammer blow in a locomotive can be reduced by ______________

using two or three pairs of wheels coupled together

balancing whole of the reciprocating parts

decreasing the speed and using two or three pairs of wheels coupled together

The secondary unbalanced force produced by the reciprocating parts of a certain cylinder of a given engine with crank radius r and connecting rod length l can be considered as equal to primary unbalanced force produced by the same weight having

r2/4l as equivalent crank radius and rotating at engine speed

an equivalent crank radius r2/4l and rotating at twice the speed of the engine

r2/4l as equivalent crank radius and rotating at engine speed

equivalent crank length of r2/4l and rotating at engine speed

Explore topic-wise MCQs in Machine Dynamics.

This section includes 8 Mcqs, each offering curated multiple-choice questions to sharpen your Machine Dynamics knowledge and support exam preparation. Choose a topic below to get started.

1.	The effect of hammer blow in a locomotive can be reduced by ______________
A.	decreasing the speed
B.	using two or three pairs of wheels coupled together
C.	balancing whole of the reciprocating parts
D.	decreasing the speed and using two or three pairs of wheels coupled together
Answer» E.

Discussion

2.	The secondary unbalanced force produced by the reciprocating parts of a certain cylinder of a given engine with crank radius r and connecting rod length l can be considered as equal to primary unbalanced force produced by the same weight having
A.	an equivalent crank radius r2/4l and rotating at twice the speed of the engine
B.	r2/4l as equivalent crank radius and rotating at engine speed
C.	equivalent crank length of r2/4l and rotating at engine speed
D.	none of the mentioned
Answer» B. r2/4l as equivalent crank radius and rotating at engine speed

Discussion

3.	If all the masses are in one plane, then in which of the following condition is possible?
A.	Resultant only in horizontal
B.	Resultant only in vertical
C.	System remains unbalanced
D.	No limitation
Answer» E.

Discussion

4.	If the rotation speed of the shaft increases then the balancing mass must also increase.
A.	True
B.	False
Answer» C.

Discussion

5.	If all the masses are in one plane, then what is the maximum no. of masses which can be placed in the same plane?
A.	3
B.	4
C.	6
D.	No limitation
Answer» E.

Discussion

6.	From the given data, find the balancing mass’s inclination in degrees if r=0.2m required in the same plane.Masses = 200kg, 300kg, 240 kg, 260Kg, corresponding radii = 0.2m, 0.15m, 0.25m and 0.3m.Angles between consecutive masses = 45, 75 and 135 degrees.
A.	201.48
B.	200.32
C.	210.34
D.	202.88
Answer» B. 200.32

Discussion

7.	Graphical method gives the best results.
A.	True
B.	False
Answer» C.

Discussion

8.	From the given data, find the balancing mass in Kg if r=0.2m required in the same plane.Masses = 200kg, 300kg, 240 kg, 260Kg, corresponding radii = 0.2m, 0.15m, 0.25m and 0.3m.Angles between consecutive masses = 45, 75 and 135 degrees.
A.	116
B.	58
C.	232
D.	140
Answer» B. 58

Discussion

Explore topic-wise MCQs in Machine Dynamics.

The effect of hammer blow in a locomotive can be reduced by ______________

The secondary unbalanced force produced by the reciprocating parts of a certain cylinder of a given engine with crank radius r and connecting rod length l can be considered as equal to primary unbalanced force produced by the same weight having

If all the masses are in one plane, then in which of the following condition is possible?

If the rotation speed of the shaft increases then the balancing mass must also increase.

If all the masses are in one plane, then what is the maximum no. of masses which can be placed in the same plane?

From the given data, find the balancing mass’s inclination in degrees if r=0.2m required in the same plane.Masses = 200kg, 300kg, 240 kg, 260Kg, corresponding radii = 0.2m, 0.15m, 0.25m and 0.3m.Angles between consecutive masses = 45, 75 and 135 degrees.

Graphical method gives the best results.

From the given data, find the balancing mass in Kg if r=0.2m required in the same plane.Masses = 200kg, 300kg, 240 kg, 260Kg, corresponding radii = 0.2m, 0.15m, 0.25m and 0.3m.Angles between consecutive masses = 45, 75 and 135 degrees.