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231.

In a transmission line following are the distributed parameters:

A.	resistance and inductance only	B.	resistance, inductance and capacitance
C.	resistance, inductance, capacitance and short conductance

232.

The bundling of conductors is done primarily to

A.	reduce reactance	B.	increase reactance
C.	increase radio interference	D.	reduce radio interference

233.

The characteristic impedance of transmission line depends upon

A.	shape of the conductor	B.	surface treatment of the conductor
C.	geometrical configuration of the conductor	D.	conductivity of the material

234.

Maximum permissible span for wooden poles is

A.	60 metres	B.	160 metres
C.	250 metres	D.	500 metres

235.

Which arrangement of poles is used for the installation of transformers and circuit breakers?

A.	I type	B.	J type
C.	H type	D.	L type

236.

Steel poles used for telephone lines are generally

A.	painted	B.	plated
C.	galvanized	D.	blackened

237.

The disadvantage of transmission lines as compared to cables is

A.	exposure to lightning	B.	exposure to atmospheric hazards likes smoke, ice, etc.
C.	inductive interference between power and communication circuits	D.	All of the above

238.

ACSR conductor implies

A.	All conductors surface treated and realigned	B.	Anode current sinusoidally run
C.	Anodised core smoothly run	D.	Aluminium conductor steel reinforced

239.

Which of the following statement is correct?

A.	Wind pressure reduces corona effects	B.	Ice on conductors improves power factor
C.	Wind pressure is taken to act in a direction at right angles to that for ice	D.	Wind pressure and ice on conductors together improve regulation of power transmitted

240.

Which of the following statement is incorrect?

A.	As the temperature rises the tension in the transmission line decreases	B.	As the temperature rises the sag in transmission lines reduces
C.	Tension and sag in transmission lines are complementary to each other