a) Induction motor b) Dc series motor c) Dc shunt motor d) Synchronous motor Ans: (b)
a) Low R and low X b) Low R and high X c) High R and high X d) High R and low X Ans: (b)
a) 0° b) 60° c) 90° d) 120° Ans: (c)
a) Speed of the rotor b) Input to prime mover c) Rotor excitation d) Coupling angle Ans: (c)
a) Number of pole alone b) Frequency of the supply alone c) Input voltage d) Number of poles and frequency of supply Ans: (d)
a) Rotary compressors b) Cranes c) Lathe machines d) None of these Ans: (a)
a) Magnetizing current to ideal short circuit current b) Magnetizing current to supply voltage c) Open circuit voltage to short circuit current for the same excitation d) None of these Ans: (a)
a) Large number of open slots in stator b) Large number of narrow slots in stator c) small number of open slots in stator d) Small number of narrow slots in stator Ans: (b)
a) Rotor Cu loss/rotor input b) Rotor Cu loss/rotor output c) stator Cu loss/stator input d) Rotor Cu loss/stator Cu loss Ans: (a)
a) Varies with power factor b) Varies with load c) Is constant at all loads d) None of these 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 |