A. Ring bus-bar scheme
B. Single bus-bar scheme
C. Breaker and a half scheme
D. Main and transfer scheme
Related Mcqs:
- When an alternator connected to the bus-bar is shut down the bus-bar voltage will___________?
A. fall
B. rise
C. remain unchanged
D. none of the above - By which of the following a bus-bar is rated?
A. Current only
B. Current and voltage
C. Current, voltage and frequency
D. Current, voltage, frequency and short time current - Which of the following D.C. distribution system is the simplest and lowest in first cost ?
A. Radial system
B. Ring system
C. Inter-connected system
D. None of the above - If variable part of annual cost on account of interest and depreciation on the capital outlay is equal to the annual cost of electrical energy wasted in the conductors, the total annual cost will be minimum and the corresponding size of conductor will be most economical. This statement is known as___________________?
A. Kelvin’s law
B. Ohm’s law
C. Kirchhoffs law
D. Faraday’s law
E. none of the above - Which of the following relays is used on long transmission lines?
A. Impedance relay
B. Mho’s relay
C. Reactance relay
D. None of the above - For aluminium, as compared to copper, all the following factors have higher values except:
A. specific volume
B. electrical conductivity
C. co-efficient of linear expansion
D. resistance per unit length for same cross-section - When a live conductor of public electric supply breaks down and touches the earth which of the following will happen?
A. Current will flow to earth
B. Supply voltage will drop
C. Supply voltage will increase
D. No current will flow in the conductor
E. None of the above - Which of the following materials is not used for transmission and distribution of electrical power________________?
A. Copper
B. Aluminium
C. Steel
D. Tungsten - Which of the following are the constants of the transmission lines ?
A. Resistance
B. Inductance
C. Capacitance
D. All of the above - Besides a method of trial and error, which of the following methods is employed for solution of network problems in interconnected system ?
A. Circulating current method
B. Thevenin’s theorem
C. Superposition of currents
D. Direct application of Kirehhoffs laws
E. All of the above
