Engineering :: Theory of Machines

@ : Home > Mechanical Engineering > Theory of Machines

221.

The no of links in Hart mechanism is

A.	8	B.	6
C.	5	D.	4

222.

In the coupling rod mechanism of a locomotive each of the four pairs is a

A.	sliding pair	B.	Rolling pair
C.	screw pair	D.	Turning pair

223.

A 0.5 kg weight attached to a light spring elongates it 0.6 mm. The natural frequency of the system should be approximately

224.

When sunk key is to be used the key way is

A.	Provided in shaft only	B.	Provided in hub only
C.	Provided both in shaft and hub	D.	Keyway is not provided for a sunk key

225.

The key generally used in wrist watches is

226.

Which of the following oil has highest specific gravity?

227.

Which one of the following is lightest?

A.	1 Metric tonne	B.	1 British ton
C.	1 US short ton	D.	1 US long ton

228.

The spring constant k of a coil-spring is

A.	directly proportional to the number of coils in the spring	B.	inversely proportional to the number of coils in the spring
C.	inversely proportional to the square of the number of coils in the spring	D.	directly proportional to the square of the number of coils in the spring

229.

Which of the following road offers maximum resistance to automobiles?

A.	Wood paving	B.	Macadam
C.	Well rolled gravel	D.	Loose sand

230.

In a car transmission losses will be least in which gear?

A.	Direct gear	B.	First gear
C.	Second gear	D.	Third gear