a) Bulk oil circuit breakers b) Minimum oil circuit breakers c) Air break circuit breakers d) None of these Ans: (c)
a) Over voltage b) Short circuit c) Temperature rise d) Overload Ans: (d)
a) Away from the circuit breaker b) Near the transformer c) Away from the transformer d) Near the circuit breaker Ans: (b)
a) 2.11 kV rms/cm b) 21.1 kV rms/m c) 211 kV rms/cm d) 2110 kV rms/m Ans: (b)
a) Inverse shunt trip b) Shunt trip c) Time delay trip d) Both (a) and (c) above Ans: (b)
a) In phase opposition to the arc current b) In phase with the arc current c) Iagging the arc current by 45° d) Leading the arc current by 90° Ans: (b)
a) 2 to 3 cycles b) 6 to 12 cycles c) 3 to 8 cycles d) 10 to 20 cycles Ans: (c)
a) 1 kA b) 5 kA c) 10 kA d) 50 kA Ans: (c)
a) Zero leading b) Zero lagging c) Unity d) Any value from zero to unity Ans: (c)
a) Short duty b) Repeated duty c) Intermittent duty d) None of these Ans: (b)
 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 |