Switch Gear And Protection Set 4

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This set of Switch Gear and Protection Multiple Choice Questions & Answers (MCQs) focuses on Switch Gear And Protection Set 4

Q1 | Which of the following circuit breakers has high reliability andminimum maintenance ?
Q2 | Arc in a circuit breaker is interrupted at
Q3 | transmission line has reflection coefficient as one.
Q4 | What will be the reflection co-efficient of the wave of load connected to transmission line if surge impedance of the line is equal to load ?
Q5 | The inverse definite mean time relays are used for over current and earth fault protection of transformer against
Q6 | Over voltage protection is recommended for
Q7 | Air blast circuit breakers for 400 kV power system are designed tooperate in
Q8 | Overfluxing protection is recommended for
Q9 | Series capacitors are used to
Q10 | Admittance relay is _______ relay.
Q11 | The material used for fuse must have
Q12 | If the fault occurs near the impedance relay, the VII ratio will be
Q13 | The torque produced in induction type relay (shaded pole structure) is
Q14 | The steady state stability of the power system can be increased by
Q15 | The inductive interference between power and communication linecan be minimized by
Q16 | The power loss is an important factor for the design of
Q17 | A fuse is connected
Q18 | H.R.C. fuse, as compared to a rewirable fuse, has
Q19 | The fuse rating is expressed in terms of
Q20 | The fuse blows off by
Q21 | On which of the following effects of electric current a fuse operates ?
Q22 | An isolator is installed
Q23 | A fuse in a motor circuit provides protection against
Q24 | Protection by fuses is generally not used beyond
Q25 | A fuse is never inserted in