PSC Junior Instructor Draftsman Civil Model Questions and Answers
76. The steel used for cutting tools is known as
(A) mild steel
(B) high carbon steel
(C) medium carbon steel
(D) none of these
Answer: B
77. The property of a material enabling it to resist deformation under stress is called
(A) stiffness
(B) toughness
(C) strength
(D) brittleness
Answer: A
78. What is the nature of stress in a ceiling fan rod ?
(A) bending
(B) tensile
(C) compressive
(D) shear
Answer: D
79. Which of the following has the highest value of Poisson’s ratio
(A) rubber
(B) steel
(C) aluminium
(D) copper
Answer: A
80. The bending moment on a section is maximum where shear force is
(A) zero
(B) minimum
(C) maximum
(D) changing sign
Answer: D
81. Which of the following is a scalar quantity ?
(A) energy
(B) momentum
(C) torque
(D) impulse
Answer: A
82. Compression members are generally called
(A) piers
(B) ties
(C) purlins
(D) struts
Answer: D
83. The time period of a second pendulum is
(A) ½ second
(B) 1 second
(C) 2 second
(D) 5 second
Answer: C
84. The specific weight of water in S.I. units is
(A) 9.81 gm
(B) 981 gm
(C) 9.81 kN/m3
(D) 9.81×103 kN/m2
Answer: C
85. In open channel water flows under
(A) force of gravity
(B) atmospheric pressure
(C) hydrostatic pressure
(D) mechanical pressure
Answer: A
86. In a tank or channel, notch is provided to measure
(A) velocity
(B) pressure
(C) discharge
(D) static energy
Answer: C
87. The turbine suitable for low heads and high flow rates is
(A) Pelton wheel
(B) Francis
(C) Kaplan
(D) All of the above
Answer: B
88. For growth of plants, the useful soil moisture is
(A) rain water
(B) gravity water
(C) capillary water
(D) chemically treated water
Answer: C
89. Precipitation includes all of the following except
(A) snow melt
(B) frost
(C) mist and fog
(D) stream flow
Answer: D
90. Most fertile soil is
(A) alluvium
(B) black soil
(C) laterite soil
(D) red soil
Answer: A
91. A tor steel bar has about ………………. more yield stress than ordinary mild steel
(A) 10%
(B) 50%
(C) 35%
(D) 20%
Answer: B
92. The maximum bulking of sand occurs at a moisture content of
(A) 28%
(B) 15%
(C) 8%
(D) 5%
Answer: C
93. The most widely used tube well in India, is
(A) strainer well
(B) cavity well
(C) slotted well
(D) perforated well
Answer: A
94. The most common cause of acidity in water is
(A) hydrogen
(B) oxygen
(C) carbon dioxide
(D) alkalies
Answer: C
95. The presence of algae in water indicates that water is
(A) hard
(B) soft
(C) turbid
(D) acidic
Answer: D
96. Which is the following is a volatile memory ?
(A) EFPROM
(B) PROM
(C) EPOM
(D) RAM
Answer: D
97. First generation computers used
(A) Transistor
(B) Micro processors
(C) Vacuum tube processors
(D) Integrated circuit
Answer: C
98. Data stored in primary storage is represented using
(A) base 16
(B) base 10
(C) base 5
(D) base 2
Answer: D
99. A command which is used to pick point like end point, mid-point, tangent etc. of entities very precisely with geometrical accuracy.
(A) GRID
(B) ZOOM
(C) DIM
(D) OSNAP
Answer: D
100. GPS is owned and operated by
(A) US Government
(B) Russian Government
(C) Chinese Government
(D) None of these
Answer: A
