Question is ⇒ If the height of transmission tower is increased, Options are ⇒ (A) the line capacitance will decrease but line inductance will remain unchanged, (B) the line capacitance and inductance will not change, (C) the line capacitance will increase but line inductance will decrease, (D) the line capacitance will decrease and line inductance will increase, (E) , Leave your comments or Download question paper.

Question is ⇒ If the height of transmission tower is increased, Options are ⇒ (A) the line capacitance will decrease but line inductance will remain unchanged, (B) the line capacitance and inductance will not change, (C) the line capacitance will increase but line inductance will decrease, (D) the line capacitance will decrease and line inductance will increase, (E) , Leave your comments or Download question paper. Previous question Next question


Q1.	If the height of transmission tower is increased
A.	the line capacitance will decrease but line inductance will remain unchanged [Correct Answer]
B.	the line capacitance and inductance will not change [Wrong Answer]
C.	the line capacitance will increase but line inductance will decrease [Wrong Answer]
D.	the line capacitance will decrease and line inductance will increase [Wrong Answer]
View Answer 21 -5 Explanation:- Answer : A Discuss it below : !! OOPS Login [Click here] is required to post your answer/result Help other students, write article, leave your comments

Previous question Next question

Also Read Similar Questions Below :

⇒ Which of the following bar schemes is the most expensive ?
Double bus-bar double breaker
Ring bus-bar scheme
Single bus-bar scheme
Main and transfer scheme

⇒ Which of the following is a static exciter ?
Rectifier
Rotorol
Amplidyne
D.C. separately excited generator

⇒ The power transmitted will be maximum when
corona losses are minimum
reactance is high
sending end voltage is more
receiving end voltage is more

⇒ A conductor due to sag between two supports, takes the form of
semi-circle
triangle
ellipse
catenary

⇒ The cause of damage to the lead sheath of a cable is
crystallisation of the lead through vibration
chemical action on the lead when buried in the earth
mechanical damage
all of the above

⇒ In a D.C. 3-wire distributor using balancers and having unequal loads on the two sides
both balancers run as generators
both balancers run as motors
balancer connected to lightly- loaded side runs as a motor
balancer connected to heavily- loaded side runs as a motor

⇒ The purpose of using a booster is to
increase current
reduce current
reduce voltage drop
compensate for voltage drop

⇒ Which of the following has least effect on corona ?
Atmospheric temperature
Number of ions
Size and charge per ion
Mean free path

⇒ The area of cross-section of the neutral in a 3-wire D.C. system is generally ____ the area of cross-section of main conductor
same as
one-fourth
one half
double

⇒ Pin type insulators are generally not used for voltages beyond
1 kV
11 kV
22 kV
33 kV

⇒ The material generally used for armour of high voltage cables is
aluminium
steel
brass
copper

⇒ A feeder, in a transmission system, feeds power to
distributors
generating stations
service mains
all of the above

⇒ The skin effect of a conductor will reduce as the
resistivity of conductor material increases
permeability of conductor material increases
diameter increases
frequency increases

⇒ If variable part of a.nnual 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
Kelvin's law
Ohm's law
Kirchhoffs law
Faraday's law

⇒ Steepness of the travelling waves is alternated by ____ of the line
capacitance
inductance
resistance
all of the above

⇒ In which of the following voltage regulators the effect of dead zero is found ?
Electromagnetic type
Magnetic amplifier
Electronic type using integrated circuits
All of the above

⇒ A uniformly-loaded D.C. distributor is fed at both ends with equal voltages. As compared to a similar distributor fed at one end only, the drop at the middle point is
one-fourth
one-third
one-half
twice

⇒ In a D.C. 3-wire distribution system, balancer fields are cross-connected in order to
boost the generated voltage
balance loads on both sides of the neutral
make both machines run as unloaded motors
equalize voltages on the positive and negative outers

⇒ There is a greater possibility of occurence of corona during
dry weather
winter
summer heat
humid weather

⇒ The operating voltage of high voltage cable's is upto
1.1 kV
3.3 kV
6.6 kV
11 kV

⇒ A 3-phase 4 wire system is commonly used on
primary transmission
secondary transmission
primary distribution
secondary distribution

⇒ Corona usually occurs when the electrostatic stress in air around the conductor exceeds
6.6 kV (r.m.s. value)/cm
11 kV (r.m.s. value)/cm
22 kV (maximum value)/cm
30 kV (maximum value)/cm

⇒ Skin effect is proportional to
(conductor diameter)⁴
(conductor diameter)³
(conductor diameter)²
(conductor diameter)^1/2

⇒ For an overhead line, the surge impedance is taken as
20-40 ohms
70-80 ohms
100-200 ohms
500-1000 ohms

⇒ The limit of distance of transmission line may be increased by the use of
series resistances
shunt capacitors and series reactors
series capacitors and shunt reactors
synchronous condensers

⇒ Transmission lines link
generating station to receiving end station
receiving end station to distribution transformer
distribution transformer to consumer premises
service points to consumer premises

⇒ Transmitted power remaining the same, if supply voltage of a D.C. 2-wire feeder is increased 100 percent, saving in copper is
25 percent
50 percent
75 percent
100 percent

⇒ Large industrial consumers are supplied electrical energy at
400 V
11 kV
66 kV
400 kV

⇒ Skin effect exists only in
a.c. transmission
high voltage d.c. overhead transmission
low voltage d.c. overhead transmission
cables carrying d.c. current

⇒ In transmission and distribution system the permissible voltage variation is
± 1 percent
± 10 percent
± 20 percent
± 30 percent