GATE Electrical Engineering (EE) Test: HVDC of Power Systems Free Online

both skin effect and corona loss

skin effect but no corona loss

corona loss but no skin effect 

neither corona loss nor skin effect

same power as an ac line

less power than an equivalent ac line

more power than the ac line

both (a) and (c)

HVDC terminal equipment are inexpensive

VAR compensation is not required in HVDC system

system reliability can be improved

harmonic problem is avoided

increase the transmission capability

decrease line losses

reduce voltage drop

provide stable interconnection

dc filters

ac filters and transformers

ac filters

pulse converters

0⁰ < α < 120⁰

0⁰ < α < 90⁰

90⁰ < α < 180⁰

none of these

less than ac substation

same as ac substation

either less or more than ac substation

more than that of ac substation

it is necessary for the sending and receiving end to be operated in synchronism.

the effects of inductive and capacitive reactances are greater than in ac transmission line of the same rating.

there are no effects due to inductive and capacitive reactances.

power transfer capability is limited by stability considerations.

inductance

capacitance

phase dispalcement

all of the above

1, 2 and 3

1 and 3

2 and 3

2 only