a) The motor will run faster b) The motor will start hunting the efficiency of the motor will increase c) The motor will start hunting d) The motor will burn out Ans: (d)
a) Starting torque b) Full load speed c) Full load current d) None of these Ans: (b)
a) Armature winding b) Field winding c) Commutator winding d) Slip rings Ans: (b)
a) R1 is minimum and R2 is maximum b) R1 maximum and R2 is minimum c) Both R1 is minimum and R2 is maximum d) Both R1 is minimum and R2 is minimum Ans: (a)
a) Both operate at same voltage b) Both have same back emf c) Both have same speed d) Both have same excitation Ans: (c)
a) Both have the same excitation b) Both have the same speed c) Both have the same back emf d) Both operate at the same voltage Ans: (a)
a) 2 V b) 10 V c) 20 V d) 40 V Ans: (a)
a) Field flux alone b) Armature current along c) Speed alone d) Both field flux and armature current Ans: (d)
a)Copper losses b) Mechanical losses c) Back emf d) Rotational losses Ans: (d)
a) Field flux alone b) Armature current alone c) Back emf d) Both armature current and field flux Ans: (a)
 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 |