1061. The highest stress that a material can withstand for a specified length of time without excessive deformation is called the __________ strength.
A. Creep
B. Endurance
C. Fatigue
D. None of these
✅ The correct answer is option A.
1063. Hard magnetic materials have high
A. Coercive force
B. Residual magnetic induction
C. Both A & B
D. Neither A nor B
✅ The correct answer is option C.
1065. __________ is the most suitable lubricant for drawing mild steel wires?
A. Kerosene
B. Water
C. Sodium stearate
D. Lime water
✅ The correct answer is option C.
1067. Which of the following are considered applications of ultrasonic testing ?
A. Determination of elastic constant
B. Detection of defects in metal
C. Measurement of material thickness
D. None of the above
✅ The correct answer is option B.
1070. The trace metal present in insulin is
A. Cu
B. Zn
C. Fe
D. Ni
✅ The correct answer is option B.
1076. What is the range of tempering temperature (°C) for most of the materials ?
A. 75-100
B. 200-300
C. 350-450
D. 500-600
✅ The correct answer is option B.
1079. Tumbling is the process of improving the __________ of the materials/parts.
A. Surface finish
B. Fatigue limit
C. Creep limit
D. Surface cleanlineses
✅ The correct answer is option D.
1082. Resilience of a bolt can be increased by increasing its
A. Length
B. Shank diameter
C. Head diameter
D. None of these
✅ The correct answer is option A.
1085. Gas carrying pipelines are best joined by
A. Nuts & bolts
B. Rivetting
C. Welding
D. None of these
✅ The correct answer is option C.