76. The cross-section of the arm of a bell crank lever is

77. The rocker arms in internal combustion engines are of first type levers.

78. In a crossed belt drive, the shafts are arranged parallel and rotate in the same directions.

79. In worm gears, the angle between the tangent to the pitch helix and an element of the cylinder, is known as

80. Idler pulley is used for

81. The bell crank levers used in railway signalling arrangement are of third type levers.

82. When spring index increases, the value of Wahl's stress factor

83. A shaft is subjected to a maximum bending stress of 80 N/mm2 and maximum shearing stress equal to 30 N/mm2 at a particular section. If the yield point in tension of the material is 280 N/mm2 and the maximum shear stress theory of failure is used, then the factor of safety obtained will be

84. The longitudinal stress is __________ of the circumferential stress.

85. The expression 0.175 - 0.841/T is the Lewis form factor for

86. A screw will be self locking, if

87. The maximum shear stress theory is used for

88. The elasticity is the property of a material which enables it to

89. The surface finish factor for a mirror polished material is

90. For low and moderate speed engines, the cam follower should move with

91. When a bolt and nut is made of mild steel, then the effective height of nut is made equal to (where d = Nominal diameter of bolt)

92. If a bearing is designated by the number 305, it means that the bearing is of

93. Tapered roller bearings can take

94. In order to remove internal stresses produced by hardening the steel, the process usually adopted is

95. A pressure vessel is said to be a thin shell, if the ratio of wall thickness to its diameter is equal to 1/10.

96. A bolt of uniform strength can be developed by

97. The ratio of endurance limit in shear to the endurance limit in flexure is

98. The lower deviation is the algebraic difference between the

99. When plates are fastened by a rivet, the holes in the plates should be made by punching and reaming.

100. When carbon in the cast iron is principally in the form of graphite, the cast iron will be of