The power factor of a load of 100 kW is to be raised from 0.5 lagging to 0.9 lagging. The KVA rating of the capacitor will be
A.12.5
B.25
C.75
D.125
E.212.5
Category: Energy Conversion Mcqs
Pressure cables are used for
A.High current ratings
B.Higher voltages
C.High KVA
D.High kW
E.Low power factors
The insulation material for a cable should have
A.High dielectric strength
B.High inechanical strength
C.Non-inflammability
D.Low cost
E.All of the above
The calorific value of diesel oil is expected to be around
A.1000 kcal/kg
B.5000 kcal/kg
C.11000 kcal/kg
D.16000 kcal/kg
E.21000 kcal/kg
1 kilowatt hour is the same as
A.1 joule
B.1000 joules
C.1000 watt-sec
D.3600 watt-hours
E.3600,000 watt-sec
The effect of corona can be reduced by
A.Increasing the conductor size and reducing the spacing between the conductors
B.Increasing the conductor size and also by increasing the spacing between the conductors
C.Reducing the conductor size and increasing the spacing between conductors
D.Reducing the conductor size as well as spacing between the conductors
E.None of the above
Death is almost certain when the current through human body is
A.10 micro-amperes
B.25 micro-amperes
C.100 micro-amperes
D.10 milli-amperes
E.100 milli-amperes
The critical pressure water is
A.1 atm
B.100 kg/cm2
C.150 kg/cm2
D.Less than 200 kg/cm2
E.More than 200 kg/cm2
Least overall efficiency can be expected in which type of power plant?
A.Steam power plant
B.Diesel engine power plant
C.Gas turbine power plant
D.Nuclear power plant
E.Hydro-electric power plant
High horse power diesel engines are usually started by
A.Self-starter
B.Cranking
C.Self-starter or cranking
D.Batteries
E.Compressed air
