« Back CONTENTS Next » 1. Capacitance in equivalent circuit of a transmission line is due to (A) leakage of current. (B) presence of magnetic flux. (C) difference in potential of line. (D) current in the line. 2. Due to sag the conductor between two support takes the form of (A) catenary […]
Electrical MCQ
MCQ on Electrical Unit – 1
« Back CONTENTS Next » 1. The rating of generator is expressed in terms of (A) kW. (B) kVA. (C) kVAR. (D) MW. 2. The rating of prime mover is expressed in terms of (A) kW. (B) kg. (C) kVA. (D) tones. 3. The relative permittivity has the following unit? […]
MCQ on Power System – 1
« Back CONTENTS Next » 1. Voltage regulation of a generator at low power factor will be (A) higher. (B) lower. (C) unchanged. (D) none of these. 2. The rated voltage of a 3 phase power system is given as (A) rms phase voltage. (B) peak phase voltage. (C) peak […]
MCQ on DC Generator – 2
« Back CONTENTS Next » 1. Armature current in D.C. generators is given to the external circuit through (A) strips. (B) commutator. (C) solid connection. (D) slip rings. 2. The function of commutator in dc machine is to convert (A) ac to dc only. (B) dc to ac only. (C) […]
MCQ on DC Generator – 1
« Back CONTENTS Next » 1. The armature of a D.C. generator is usually made of (A) silicon steel. (B) copper. (C) non ferrous material. (D) cast iron. 2. The yoke of a dc machine is made of (A) silicon steel. (B) aluminium. (C) cast iron. (D) stainless steel. 3. […]
MCQ on Power electronics – 1
« Back CONTENTS Next » 1. Chopper is also known as (A) AC transfromer. (B) DC transformer. (C) voltage changer. (D) voltage reducer. 2. A thyristor can be termed as (A) AC switch. (B) DC switch. (C) both AC and DC switch. (D) square wave switch. 3. Which of the […]