Strength of Materials The resultant of the following three couples 20 kg force, 0.5 m arm, + ve sense 30 kg force, 1 m arm, – ve sense 40 kg force, 0.25 m arm, + ve sense having arm of 0.5 m will be 20 kg, + ve sense 10 kg, - ve sense 20 kg, - ve sense 10 kg, + ve sense 20 kg, + ve sense 10 kg, - ve sense 20 kg, - ve sense 10 kg, + ve sense ANSWER DOWNLOAD EXAMIANS APP
Strength of Materials Coefficient of friction is the ratio of limiting friction and normal reaction angle between normal reaction and the resultant of normal reaction and the limiting friction the friction force acting when the body is just about to move the friction force acting when the body is in motion ratio of limiting friction and normal reaction angle between normal reaction and the resultant of normal reaction and the limiting friction the friction force acting when the body is just about to move the friction force acting when the body is in motion ANSWER DOWNLOAD EXAMIANS APP
Strength of Materials The effort required to lift a load W on a screw jack with helix angle a and angle of friction<="" div=""> Wtan(a-<)>) Wsin(a + <(>) Wcos(a + ) Wtan(a + <)>) Wtan(a-<)>) Wsin(a + <(>) Wcos(a + ) Wtan(a + <)>) ANSWER DOWNLOAD EXAMIANS APP
Strength of Materials A flywheel on a motor goes from rest to 1000 rpm in 6 sec. The number of revolutions made is nearly equal to 100 250 50 25 100 250 50 25 ANSWER DOWNLOAD EXAMIANS APP
Strength of Materials Center of percussion is point of suspension the point of C.G. the point of metacentre the point of application of the resultant of all the forces tending to cause a body to rotate about a certain axis point of suspension the point of C.G. the point of metacentre the point of application of the resultant of all the forces tending to cause a body to rotate about a certain axis ANSWER DOWNLOAD EXAMIANS APP
Strength of Materials The centre of percussion of a solid cylinder of radius r resting on a horizontal plane will be 2r/3 3r/2 r/2 r/A 2r/3 3r/2 r/2 r/A ANSWER DOWNLOAD EXAMIANS APP
EXAMIANS