The length of Seconds Pendulum is a.992 mm b.999 mm c.994 mm d.995 mm e.1000 mm

The length of Seconds Pendulum is a.992 mm b.999 mm c.994 mm d.995 mm e.1000 mm
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c. 994 mm
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Last Answer : d. Compound pendulum

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A clock with a second pendulum is gaining 5 minutes a day. To correct it a.The eccentricity of bob with pendulum should be decreased b.The length of the pendulum should be decreased c.The length of pendulum should not be changed d.The length of the pendulum should be increased e.The eccentricity of bon with pendulum should be increased

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Last Answer : a. 500 KJ

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A stone is dropped into a deep shaft without any initial velocity. The sound of the stone hitting the bottom is heard after 4 seconds. If the velocity of sound is 330 m/sec the depth of the shaft will be a.33.1 m b.660 m c.165 m d.66.2 m e.330 m

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A flywheel weighs 400 kg and has a radius of gyration of 30 cm about its axis of rotation. It is mounted on a shaft subjected to a moment of 40 kgm. If the flywheel starts from restits speed after 3 seconds wil be a.10.9 rad/sec b.19.0 rad/sec c.51.2 rad/sec d.3.33 rad/sec e.16.35 rad/sec

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A dash pot consists of a cylinder 10 cm in diameter in which slides a piston 12 cm long having a radial clearance of 1 mm. The cylinder is filled with oil having a viscosity of 1 poise. What will be the resistance offered by the piston to sliding with a velocity of 3 cm/sec a.1090 kg b.100 kg c.10900 kg d.10 kg e.50 kg

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Last Answer : c. 10900 kg

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A grinding wheel rotates at 3000 rpm. When power supply is cut off the wheel stops in 5 sec. The number of revolutions made by the wheel before coming to rest would be a.500 b.107 dynes c.250 d.3000 e.1000

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Last Answer : c. 250

A hammer gains 50 Ns momentum in 0.05 sec. The average force on the hammer will be a.500 N b.2000 N c.1500 N d.107 dynes e.1000 N

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Last Answer : e. 1000 N

A 3.2 m diameter balloon is filled with Helium. The total weight of balloon, gas and pay load is 10 kg kg. In an isothermal atmosphere having conditions identical to N.T.P. the balloon will rise to a height of about a.6000 m b.1500 m c.3000 m d.2000 m e.1000 m

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Last Answer : a. 6000 m

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Last Answer : b. 163.5 KW

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Last Answer : a. 15 - 20 kg

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Last Answer : e. 45?

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Last Answer : d. 0.5 m

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Last Answer : d. 10470

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Last Answer : b. 80N

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Last Answer : e. 60.1 mts

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Last Answer : e. 25.5 m/s

In case of cantilever, irrespective of the type of loading the maximum bendry moment and maximum shear force occur at a.107 dynes b.Free end c.2/3 of the length, from the free end d.Centre of the beam e.Fixed end

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Last Answer : e. Zero

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A cannon of barrel length 2 m fires a shell of weight 6 kg with a muzzle velocity of 50 m/sec. The force exerted by the gases on the shell would be approximately a.76 t b.19 t c.152 t d.8.5 t e.38 t

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Last Answer : b. 1025 hPa

QFE is 1000 hPa with an airfield elevation of 200m AMSL. What is QNH? (use 8m per hPa) a. 975 hPa b. 1025 hPa c. 1008 hPa d. 992 hPa

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Last Answer : b. 490 cm

The law of conservation of mechanical energy is valid a.Irrespective of the nature of force field b.Only in gravitational field c.Only if the total work done by the particle in moving around in a closed trajectory is zero d.Only if the force is tangential to the trajectory e.None of the above

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A screw jack has 4 threads per inch. The mean radius of the thread is 2.338 inches. The mean diameter of the bearing surface under the cap is 3.25 inches. What is the turning moment required to raise the bload of 150 kg ( a.5.61 kg-inch b.50.6 kg-inch c.107 dynes d.30.3 kg-inch e.23.6 kg-inch

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An electric motor drives a windless which hauls up a crate A of weight W = 500 kg up an inclined plane through a height of 10 m in 2 minutes. The torque acting on the windless is 25 kgm and the drum of the windless makes 30 rpm. The efficiency of the inclined plane would be a.0.41 b.0.61 c.0.265 d.0.5305 e.0.66

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Last Answer : d. 0.5305

A particle starts from rest and moves in a straight line whose equation of motion is given by S = 2t3 - t2 - 1. The acceleration of the particle after one sec will be a.6 m/sec2 b.4 m/sec2 c.12 m/sec2 d.10 m/sec2 e.8 m/sec2

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Last Answer : d. 10 m/sec2