A. An acceptor
B. A donor
C. Germanium
D. Silicon
Correct Answer: An acceptor ✔
Last Updated: December 22, 2018
Related MCQs
- The carbon percentage is least in__________?
- The conductivity of an extrinsic semiconductor with temperature__________?
- For a hole which of the following statements is incorrect ?
- For a particular material the Hall coefficient was found to be zero. The material is__________?
- Superconducting metal in super conducting state has relative permeability of__________?
- Which of the following factors affect resistivity of metals ?
- Surface resistance of an insulating material is reduced due to the__________?
- In conductors conduction of electricity takes place due to movement of__________?
- Effect of moisture on the insulating materials is to__________?
- The forbidden gap in an insulator is__________?
- If the resistance of a conductor does not vary in accordance with Ohm’s law it is known as__________?
- Due to which of the following fact, in India, aluminium is replacing copper ?
- Selenium is __________ semiconductor?
- The photo-electric effect occurs only when the incident light has more than a certain critical__________?
- Spark plug makes use of which of the following materials for insulation ?
- __________ has the best damping properties?
- Which of the following is a semiconductor material ?
- Due to which of the following reasons copper and aluminium are not used for heating elements ?
- Which of the following materials is the best conductor of electricity ?
- Thermocouples are mainly used for the measurement of__________?
- The conduction of electricity, in semiconductors, takes place due to movement of__________?
- is the property of absorbing moisture from atmosphere__________?
- Substances whose specific resistance abruptly decreases at very low temperature are called__________?
- Which of the following is an advantage of stranded conductor over equivalent single conductor ?
- Copper, even though costly, finds use in the windings of electrical machines because__________?
- Which of the following materials is used for making coils of standard resistances ?
- Low resistivity materials are used in__________?
- Which of the following high resistance materials has the highest operating temperature ?
- Platinum is used in__________?
- Steel wire is used as__________?
- Carbon bearings are used under which of the following conditions ?
- Due to which of the following factors the brush wear rate is altered ?
- The impurity atoms is semiconductors__________?
- Carbon resistors are used extensively because they are__________?
- Which of the following are non-conductors of electricity?
- Carbon rods are used in wet and dry cells because__________?
- Which of the following material is not a semiconductor ?
- The number of atoms per unit cell in B.C.C. structure is__________?
- In a crystal, an atom vibrates at a frequency determined by__________?
- The conductivity of a metal is determined by__________?
- Due to which of the following reasons aluminium does not corrode in atmosphere ?
- The resistivity of a metal is a function of temperature because__________?
- Total number of crystal systems is__________?
- A carbon resistor contains__________?
- In graphite, bonding is__________?
- Non-linear resistors__________?
- Which of the following materials does not have covalent bonds ?
- Super conductivity can be destroyed by__________?
- Which of the following affect greatly the resistivity of electrical conductors ?
- __________ is a hard solder?
- Most of the common metals have _________ structure?