41. Carbon resistors are used extensively because they are A. Easy to make B. Compact C. Inexpensive D. All of the above reasons Answer & Solution Discuss in Board Save for Later Answer & Solution Answer: Option D No explanation is given for this question Let's Discuss on Board
42. The current due to electron flow in conduction band is the hole current in valence band. A. Equal to B. Less than C. Greater than D. Any of the above Answer & Solution Discuss in Board Save for Later Answer & Solution Answer: Option C No explanation is given for this question Let's Discuss on Board
43. The metal having the lowest temperature coefficient of resistance is A. Gold B. Copper C. Aluminium D. Kanthal Answer & Solution Discuss in Board Save for Later Answer & Solution Answer: Option A No explanation is given for this question Let's Discuss on Board
44. A perfect conductor has A. Zero conductivity B. Unity conductivity C. Infinite conductivity D. None of the above Answer & Solution Discuss in Board Save for Later Answer & Solution Answer: Option C No explanation is given for this question Let's Discuss on Board
45. For a particular material the Hall coefficient was found to be zero. The material is A. Insulator B. Metal C. Intrinsic semiconductor D. None of the above Answer & Solution Discuss in Board Save for Later Answer & Solution Answer: Option B No explanation is given for this question Let's Discuss on Board
46. Total number of crystal systems is A. 2 B. 4 C. 7 D. 12 Answer & Solution Discuss in Board Save for Later Answer & Solution Answer: Option C No explanation is given for this question Let's Discuss on Board
47. Superconductors are becoming popular for use in A. Generating very strong magnetic field B. Manufacture of bubble memories C. Generating electrostatic field D. Generating regions free from magnetic field Answer & Solution Discuss in Board Save for Later Answer & Solution Answer: Option A No explanation is given for this question Let's Discuss on Board
48. In graphite, bonding is A. Covalent B. Metallic C. Vander Waals D. Vander Waals and covalent Answer & Solution Discuss in Board Save for Later Answer & Solution Answer: Option D No explanation is given for this question Let's Discuss on Board
49. The converse of hardness is known as A. Malleability B. Toughness C. Softness D. None of the above Answer & Solution Discuss in Board Save for Later Answer & Solution Answer: Option C No explanation is given for this question Let's Discuss on Board
50. Which of the following resistive materials has the lowest temperature co-efficient of resistance ? A. Nichrome B. Constantan C. Kanthal D. Molybdenum Answer & Solution Discuss in Board Save for Later Answer & Solution Answer: Option A No explanation is given for this question Let's Discuss on Board
