📊 Engineering Materials
Q. Which of the following is donor impurity for semi-conductors?
  • (A) Boron
  • (B) Callium
  • (C) Antimony
  • (D) Indium
💬 Discuss
✅ Correct Answer: (C) Antimony

You must be Logged in to update hint/solution

💬 Discussion

Related MCQs

Q. The rolling contact bearings are known as

Q. The method of obtaining different mechanisms by fixing in turn different links in a kinematic chain, is known as

Q. In case of liquids, the binary diffusivity is proportional to (where, T = temperature)

Q. The process of chamfering the entrance of a drilled hole is known as_____

Q. Two X ray machines operating at same nominal kilovoltage and milliamperage settings:

Q. An aqueous solution of methanol is to be distilled in a tray column. High pressure steam is available as a source of heat. For a given reflux ratio an

Q. A friction circle is a circle drawn when a journal rotates in a bearing. Its radius depends upon the coefficient of friction and the

Q. In a mechanism, the fixed instantaneous centers are those centers which

Q. The relation between the controlling force (Fc) and radius of rotation (r) for a stable spring controlled governor is

Q. According to ASTM E709-95, with wet continuous magnetization technique, the duration of magnetization current is of the order of:

📊 Question Analytics

👁️
79
Total Visits
📽️
2 y ago
Published
🎖️
Mr. Dubey
Publisher
📈
95%
Success Rate