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This set of Energy Conversion Multiple Choice Questions & Answers (MCQs) focuses on Energy Conversion Set 15
Q1 | Which type of insulators are used on 132 kV transmission lines?
- Pin type
- Disc type
- Shackle type
- Pin and shackle type
- None of the above
Q2 | Gamma rays are
- high energy, short wavelength electromagnetic radiation
- high energy, long wavelength electromagnetic wavelength
- low energy, long wavelength electromagnetic radiation
- low energy, short wavelength electromagnetic radiation
- None of the above
Q3 | Baume's scale measures
- purity of water
- radioactivity
- specific gravity of liquids
- specific gravity of gases
- None of the above
Q4 | The depreciation rate for an equipment is generally decided in light of
- Sales tax rules
- Excise duty rules
- Income tax rules
- Electricity duty rules
- None of the above
Q5 | Which of the following is an advantage of using static capacitors of power factor improvement?
- Low losses within the capacitors
- No rotating parts
- Can be easily installed
- Can work under normal atmospheric conditions
- All of the above
Q6 | Skin effects depends upon
- size of the conductor
- frequency of the current
- resistivity of the conductor
- All of the above
- None of the above
Q7 | If a diesel engine has a turbochanger, it can be concluded that the engine is
- Pressure lubricated
- Double acting type
- Air cooled type
- Supercharged type
- High speed type
Q8 | Which of the following factor affects corona?
- Atmospheric conditions
- Conductor size
- Spacing between conductors
- Line voltage
- All of the above
Q9 | The function of steel wire in a ACSR conductor is
- to take care of voltage surges
- to prevent corona
- to reduce inductance and hence improve power factor
- to provide additional mechanical strength
- None of the above
Q10 | Which of the following method can be used for heating wood?
- Oil burner heating
- Carbon arc heating
- Tungsten arc heating
- Resistance heating
- Dielectric heating
Q11 | Sag is provided in overhead transmission lines so that
- Repairs can be done easily
- Corona can be reduced
- Skia effect can be reduced
- Safe tension is not exceeded
- None of the above
Q12 | A chimney is not a part of which of the following type of power plant?
- Steam power plant
- Diesel engine power plant
- Gas turbine power plant
- Hydro-electric power plant
- All of the above
Q13 | Fixed carbon in case of biogas is around
- 12.5 percent
- 25 percent
- 40 percent
- 68 percent
- None of the above
Q14 | the main cause of power loss in a transmission line is
- Resistance
- capacitance is negligible
- Inductance
- Both inductance and capacitance
- None of the above
Q15 | In hydrothermal systems when steam water and dissolved solids are available as source of energy, the entrained solids are removed by
- filters
- centrifugal separators
- strainers
- None of the above
- None of the above
Q16 | Steel poles used for telephone lines are generally
- painted
- plated
- galvanized
- blackened
- None of the above
Q17 | Raniganj is famous for
- Thorium deposits
- Oil fields
- LPG
- Coal
- None of the above
Q18 | The chemical composition of coal is given by
- Proximate analysis
- Ultimate analysis
- Orsat analysis
- All of the above
- None of the above
Q19 | If 3 MW power is to be transmitted over a distance of 30 km, the desirable transmission voltage will be
- 11 kV
- 33 kV
- 66 kV
- 132 kV
- None of the above
Q20 | The power factor of a 3 phase induction motor will be least
- at no load
- at 80% load
- at 25% load
- at full load
- at 5% load
Q21 | A 132 kV transmission line carrying power through a distance of 250 kilometers will be termed as
- Very short transmission line
- Short transmission line
- Long transmission line
- Trunk line
- None of the above
Q22 | In a hydroelectric plant a conduit-system for taking water from the intake work to the turbine is known as
- Penstock
- Dam
- Reservoir
- Surge tank
- Flume
Q23 | Most power generating units are conservatively rated. For short durations, these units can be easily overloaded by about
- 1 to 2 percent
- 10 to 15 percent
- 25 to 30 percent
- 40 to 50 percent
- None of the above
Q24 | Therm is a unit of
- radioactivity
- heating value
- wind speed
- tidal wave
- None of the above
Q25 | In a fluorescent tube circuit, choke acts as a
- A starter
- A source of heat
- A device for improving the power factor
- A current limiting device
- None of the above