a) Instantaneous relays b) Definite time lag c) Inverse time lag d) All of these Ans: (d)
a) Power b) Voltage c) Current d) Reactance Ans: (a)
a) Transmission lines b) Transformers c) Motors d) Underground cables Ans: (c)
a) High frequency waves entering in generating units b) Power frequency waves c) Both (a) and (b) d) None of these Ans: (a)
a) A.c. only b) D.c. only c) Both (a) and (b) d) None of these Ans: (c)
a) MHO relays b) Reactance relays c) Impedance relays d) All of these Ans: (c)
a) Thermocouple type relays b) Bimetallic relays c) Electronic relays d) All of these Ans: (d)
a) Split-phase relays b) Impedance relays c) Reactance relays d) MHO relays Ans: (d)
a) Overhead lines b) Transformer c) Motors d) Cables Ans: (a)
a) Motors b) Alternators c) Bus bars d) All of these Ans: (d)