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25 questions
P-4, Q-3,R-1,S-2
P-4,Q-3,R-2,S-1
P-2,Q-4,R-3,S-1
P-3,Q-4,R-2,S-1
The number of atoms per unit cell and the number of slip systems, respectively, for a face-centered cubic (FCC) crystal are
3, 3
3, 12
4, 12
4, 48
The crystal structure of aluminium is
(A) body-centred cubic
(B) face-centred cubic
(C) close-packed hexagonal
(D) body-centred tetragonal
The “Jominy test” is used to find
(A) Young’s modulus
(B) hardenability
(C) yield strength
(D) thermal conductivity
(A) P–III, Q–I, R–II, S–IV
(B) P–III, Q–II, R–I, S–IV
(C) P–IV, Q–II, R–I, S–III
(D) P–IV, Q–I, R–II, S–III
A force F is acting on a bent bar which is clamped at one end as shown in the figure.
The CORRECT free body diagram is
Which one of the following is used to convert a rotational motion into a translational motion?
(A) Bevel gears
(B) Double helical gears
(C) Worm gears
(D) Rack and pinion gears
Which of the bearings given below SHOULD NOT be subjected to a thrust load?
(A) Deep groove ball bearing
(B) Angular contact ball bearing
(C) Cylindrical (straight) roller bearing
(D) Single row tapered roller bearing
Which one of the following configurations has the highest fin effectiveness?
(A) Thin, closely spaced fins
(
B) Thin, widely spaced fins
(C) Thick, widely spaced fins
(
D) Thick, closely spaced fins
Which one of the following statements is correct for a superheated vapour?
(A) Its pressure is less than the saturation pressure at a given temperature.
(B) Its temperature is less than the saturation temperature at a given pressure.
(C) Its volume is less than the volume of the saturated vapour at a given temperature.
(D) Its enthalpy is less than the enthalpy of the saturated vapour at a given pressure.
The internal energy of an ideal gas is a function of
(A) temperature and pressure
(B) volume and pressure
(C) entropy and pressure
(D) temperature only
Which one of the following is NOT a rotating machine?
(A) Centrifugal pump
(B) Gear pump
(C) Jet pump
(D) Vane pump
The thermodynamic cycle shown in figure (T-s diagram) indicates
(A) reversed Carnot cycle
(B) reversed Brayton cycle
(C) vapor compression cycle
(D) vapor absorption cycle
Heat and work are
(A) intensive properties
(B) extensive properties
(C) point functions
(D) path functions
The spring constant of a helical compression spring DOES NOT depend on
(A) coil diameter
(B) material strength
(C) number of active turns
(D) wire diameter
Pre-tensioning of a bolted joint is used to
(A) strain harden the bolt head
(B) decrease stiffness of the bolted joint
(C) increase stiffness of the bolted joint
(D) prevent yielding of the thread root
The type of weld represented by the shaded region in the figure is
(A) groove
(B) spot
(C) fillet
(D) plug
Match the following products with the suitable manufacturing process
(A) P-4, Q-3, R-1, S-2
(B) P-2, Q-1, R-3, S-4
(
C) P-4, Q-1, R-2, S-3
(D) P-1, Q-3, R-4, S-2
The part of a gating system which regulates the rate of pouring of molten metal is
(A) pouring basin
(B) runner
(C) choke
(D) ingate
Interpolator in a CNC machine
(A) controls spindle speed
(B) coordinates axes movements
(C) operates tool changer
(D) commands canned cycle
Which one of the following instruments is widely used to check and calibrate geometric features of machine tools during their assembly?
(A) Ultrasonic probe
(B) Coordinate Measuring Machine (CMM)
(
C) Laser interferometer
(D) Vernier calipers
The material property which depends only on the basic crystal structure is
(A) fatigue strength
(B) work hardening
(C) fracture strength
(D) elastic constant
John Thomas, an __________________ writer, passed away in 2018.
(A) imminent
(B) prominent
(C) eminent
(D) dominant
Hardenability of steel is a measure of
(A) the ability to harden when it is cold worked
(B) the maximum hardness that can be obtained when it is austenitized and then quenched
(C) the depth to which required hardening is obtained when it is austenitized and then quenched
(D) the ability to retain its hardness when it is heated to elevated temperatures
Which of the following engineering materials is the most suitable candidate for hot chamber die casting?
(A) low carbon steel
(B) titanium
(C) copper
(D) tin
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