126. A framed structure is imperfect, if the number of members are __________ (2j - 3).
127. The linear acceleration (a) of a body rotating along a circular path of radius (r) with an angular acceleration of α rad / s2, is
128. The total energy possessed by a system of moving bodies
129. The moment of inertia of a solid cylinder of mass m, radius r and length l about the longitudinal axis or polar axis is
130. In a screw jack, the effort required to lift the load is given by(where W = Load lifted, α = Helix angle, and φ = Angle of friction.)
131. The terms 'leverage' and 'mechanical advantage' Of a compound lever have got the same meaning.
132. A couple produces
133. Energy may be defined as the capacity of doing work.
134. For a self locking machine, the efficiency must be
135. The resultant of the two forces P and Q is R. If Q is doubled, the new resultant is perpendicular to P. Then
136. Onejoule is equal to
137. Whenever a force acts on a body and the body undergoes a displacement, then
138. When a particle moves along a straight path, there will be centripetal acceleration as well as tangential acceleration.
139. If the body falls freely under gravity, then the gravitational acceleration is taken as
140. A framed structure, as shown in the below figure, is a
141. The rate of change of displacement of a body is called
142. The efficiency of a screw jack is maximum, when(where α = Helix angle, and φ = Angle of friction.)
143. The periodic time (T) is given by(where ω = Angular velocity of particle in rad / s.)
144. Three forces acting on a rigid body are represented in magnitude, direction and line of action by the three sides of a triangle taken in order. The forces are equivalent to a couple whose moment is equal to
145. If tension in the cable supporting a lift moving downwards is half the tension when it is moving upwards, the acceleration of the lift is
146. Which is the largest organ in the human body?
147. When a train is rounding a curve, the side thrust on the wheel flanges is prevented by raising the outer edge of the rail.
148. Frequency of vibrations means the number of cycles per second.
149. The main religion of the ancient Iranians was?
150. The velocity ratio for the third system of pulleys is