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Applied mechanics
1-Dont try to cram or spend more time here just read it fast and cover syllabus then practice MCQ's cheptor of same topic to check your progress. . |
2-Wrong options are also given but dont concentrate there, Right answer is in bold format. |
Q21 ⇒ Due to the creep of belts, in a belt driven
system there will be All the above are correct [other wrong options] [Discuss in forum] Loss of motion Loss of power to be transmitted Extra movement of belt as compared to the follower |
Q22 ⇒ The angular speed of a car while taking a circular turn of radius 100m at 36 km/hour, is 0.1 radian/sec [other wrong options] [Discuss in forum] 1 radian/sec 100 radian/sec 1000 radian/sec |
Q23 ⇒ The product of a scalar and a vector is Always a vector [other wrong options] [Discuss in forum] Always a scalar Neither a scalar nor a vector May be a scalar or may be a vector |
Q24 ⇒ The ratio of the speed of a rolling cylinder to the speed of sliding cylinder is less than 1 [other wrong options] [Discuss in forum] equal to 1 between 1 and 2 greater than 2 |
Q25 ⇒ The ratio of M.I. of a circular plate to that of a
square plate for equal depth is Less than one [other wrong options] [Discuss in forum] Equal to one Greater than one None of these |
Q26 ⇒ A hoop of radius 3 m weighs 100 kg. It rolls along a horizontal floor so that at its centre of mass has a speed of 200 mm/sec, . The work required to stop the hoop is 4 J [other wrong options] [Discuss in forum] 2 J 6 J 8 J |
Q27 ⇒ A cylinder will slip on an inclined plane of inclination 0 if the coefficient of static friction between plane and cylinder is less than (1/3) tan 0 [other wrong options] [Discuss in forum] less than (2/3) tan 0 less than (1/3) sin 6 less than (2/3) sin 6 |
Q28 ⇒ Rate of change of angular momentum is equal to torque [other wrong options] [Discuss in forum] force linear momentum impulse |
Q29 ⇒ If the angular distance, 0 = 2t3 - 3t2, the angular acceleration at t = 1 sec. is 6 rad/sec2 [other wrong options] [Discuss in forum] 1 rad/sec2 4 rad/sec2 12 rad/sec2 |
Q30 ⇒ A circular disc rotates at n rpm. The angular velocity of a circular ring of same mass and radius as the disc and to have the same angular momentum is n/2 rpm [other wrong options] [Discuss in forum] n rpm n/4 rpm 2n rpm |
Q31 ⇒ A particle moves in a straight line and its position is defined by the equation x = 6 t2 - t3 where t is expressed in seconds and x in metres. The maximum velocity during the motion is 12 m/sec [other wrong options] [Discuss in forum] 6 m/sec 24 m/sec 48 m/sec |
Q32 ⇒ A flywheel of moment of inertia 20 kg-m" is acted upon by a tangential force of 5 N at 2 m from its axis, for 3 seconds. The increase in angular velocity in radian persecond is 3/2 ' [other wrong options] [Discuss in forum] 1/2 2 3 |
Q33 ⇒ A disc of mass 4 kg, radius 0.5m and moment of inertia 3 kg-m2 rolls on a horizontal surface so that its centre moves with speed 5 m/see. Kinetic energy of the disc is 200 J [other wrong options] [Discuss in forum] 50 J 150 J 400 J |
Q34 ⇒ When a circular wheel rolls on a straight track, then the shape of body centrode and space centrode respectively are circle and straight line [other wrong options] [Discuss in forum] straight line and parabola straight line and circle circle and parabola |
Q35 ⇒ Select the correct statement The body centrode rolls on the space centrode. [other wrong options] [Discuss in forum] The space centrode rolls on the body centrode. Both body and space centrodes may role on each other. The body centrode never touches space centrode. |
Q36 ⇒ At the instantaneous centre, the velocity of the moving lamina at any instant is zero [other wrong options] [Discuss in forum] maximum minimum varying |
Q37 ⇒ Instantaneous centre is at infinity when the angular velocity is zero [other wrong options] [Discuss in forum] constant maximum minimum |
Q38 ⇒ For a given velocity of a projectile, the range is maximum when the angle of projection is 45° [other wrong options] [Discuss in forum] 30° 90° 0° |
Q39 ⇒ The angle of projection at which the horizontal range and maximum height of a projectile are equal to 76° [other wrong options] [Discuss in forum] 36° 45° 56° |
Q40 ⇒ The maximum value of the horizontal range for a projectile projected with a velocity of 98 m/sec is 980 m [other wrong options] [Discuss in forum] 98 m 490 m 1960m |
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