a) Thermal emission b) Alternators c) Field emission d) Transmission lines Ans: (d)
a) 4 kV b) 25 kV c) 10 kV d) 36 kV Ans: (d)
a) Current carrying contacts called electrodes b) Arc extinguishers c) Transformers to isolate two systems d) Circuits to break the system Ans: (a)
a) Restriking voltage b) Supply voltage c) Recovery voltage d) None of these Ans: (c)
a) Bulk oil circuit breaker b) Minimum oil circuit breaker c) Air blast circuit breaker d) SF6 circuit breaker Ans: (d)
a) Circuit power factor only b) Switching condition only c) Both (a) and (b) above d) None of these Ans: (c)
a) Aluminium b) Electrolytic c) Copper tungsten alloy d) Tungsten Ans: (c)
a) Circuit breakers b) Fast switches c) Relays d) Fuses Ans: (b)
a) Air b) Oil c) Water d) None of these Ans: (a)
a) Air break circuit breaker b) Air blast circuit breaker c) Bulk oil circuit breaker d) SF6 circuit breaker Ans: (c)
 Multiple Choice Question (MCQ) of Electronics page-17:241. Which of the following statement is true? a) The saturation voltage VCF of silicon transistor is more than germanium transistor. b) The saturation voltage VCE for germanium transistor is more than silicon transistor. c) The saturation voltage VCE for silicon transistor is same as that for germanium. d) The saturation voltage VCE for silicon transistor is lower than germanium transistor. |
Multiple Choice Question (MCQ) of Electronics page-16:226. Which of the following statement is correct? a) Inner electrons are always present in the semiconductor. b) Bound electrons are always present in the semiconductor. c) Free electrons are always present in the semiconductor. d) Inner and bound electrons are always present in the semiconductor. |
Multiple Choice Question (MCQ) of Electronics page-15:211. The materials whose electrical conductivity is usually less than 1 × 106 mho/m are a) Semiconductors b) Conductors c) Insulators d) Alloys |
Multiple Choice Question (MCQ) of Electronics page-14:196. In which of the following device the base resistors are not added in the package but added externally? a) UJT b) CUJT c) PUT d) None of the above |
Multiple Choice Question (MCQ) of Electronics page-13:181. The conduction in JEFT is always by the a) Majority carriers b) Minority carriers c) Holes d) Electrons e) Holes and electrons simultaneously |