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301.

An automobile weighing 2800 lb and travelling at 30 miles/hr, hits a depression in the road which has a radius of curvature of 50 ft. What is the total force to which springs are subjected.

A.	2800 ib	B.	3280 lb
C.	6170 lb	D.	8230 lb

302.

In case of cantilever, irrespective of the type of loading the maximum bendry moment and maximum shear force occur at

A.	Fixed end	B.	Free end
C.	Centre of the beam	D.	2/3 of the length, from the free end

303.

Efficiency of a screw jack in maximum when its 31 helix angle, ? is

A.	45?	B.	?
C.	45 + ?/2	D.	45 - ?/2

304.

A column has its equivalent length equal to its length in case of

A.	both ends hinged	B.	one end fixed, other free
C.	one end hinged, other free	D.	both end fixed

305.

Which of the following bearing will have least coefficient of friction

A.	Self aligury bearing	B.	Cylinderical roller bearing
C.	Thrust ball bearing	D.	Single ball bearing
E.	Tapered bearing

306.

Moment of Inertia of triangular section about an axis passing through its base is given by

A.	bh3/12	B.	bh3/32
C.	bh3/36	D.	None of the above

307.

Power required for a train weighing 200 Mg to move at a uniform speed of 60 Kmph up an incline of 1 in 200 is (Resistance due to friction is negligible)

A.	9810 KW	B.	1000 KW
C.	16.67 KW	D.	163.5 KW

308.

A mass of 5 kg moves on a smooth horizontal plane with a speed of 8 m/s attached to a fixed point on the plane by a string of length 4m. Tension in the string is

A.	785	B.	80N
C.	392.4N	D.	None of the above

309.

Minimum horsepower of pump required for filling 50m3 water tank, 20 metres high from ground in 30 minutes by lifting water from a well 5 metres below the ground level is

A.	6.81 KW	B.	7.5 KW
C.	66.8 KW	D.	5.45 KW

310.

A man pulls a cart with 100 N force from rest with an acceleration of 10 m/sec2 for 10 seconds. The work done by him is

A.	500 KJ	B.	50.96 KJ
C.	101.92 KJ	D.	None of the above