ENGINEERING CAREER AND STUDY MATERIALS

Question 1:-Identify the hardest tool material  A:-Steel  B:-Ceramics  C:-Tungston carbide  D:-Diamond  Correct Answer:- Option-D Question 2:-The essential constituent of any hardened steel is  A:-Austenite  B:-Cementite  C:-Martensite  D:-Pearlite  Correct Answer:- Option-C Question 3:-The collapsible tooth paste tube are made by  A:-Drawing  B:-Deep drawing  C:-Rolling  D:-Extrusion  Correct Answer:- Option-D Question 4:-The vertical passage for bringing molten metal to mould cavity is called  A:-Sprue  B:-Riser  C:-Gate  D:-Chaplet

1. Which of the following instruments indicate the instantaneous value of the electrical quantity being measured at the time at which it is being measured ? (a) Absolute instruments (b) Recording instruments (c) Indicating instruments (d) Integrating instruments Answer: (c) Indicating instruments 2. In closed loop control system, with positive value of feedback gain the overall gain of the system will (a) decrease (b) increase (c) be unaffected (d) any of the above Answer: (a) decrease 3. For large power transformers, self oil cooled type or air blast type which of the following values of current density may be used ? (a) 1.0 to 1.2 A/mm2 (b) 1.5 to 2.0 A/mm2