 # Civil Engineering Objective Questions { Applied Mechanics }

211. A 49 kg lady stands on a spring scale in an elevator. During the first 5 sec, starting from rest, the scale reads 69 kg. The velocity of the elevator will be

212. For lifting a load of 50 kg through a distance of 2.5 cm, an effort of 12.5 kg is moved through a distance of 40 cm. The efficiency of the lifting machine, is

213. A load of 500 kg was lifted through a distance of 13 cm. by an effort of 25 kg which moved through a distance of 650 cm. The mechanical advantage of the lifting machine is

214.  A load of 500 kg was lifted through a distance of 13 cm. by an effort of 25 kg which moved through a distance of 650 cm The velocity ratio of the lifting machine as, is

215.  A load of 500 kg was lifted through a distance of 13 cm. by an effort of 25 kg which moved through a distance of 650 cm The efficiency of the lifting machine, is

216. For a self-locking machine, the efficiency should be

217. The velocity ratio of an inclined plane of inclination 0 with horizontal for lifting a load is

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