51.

58.

84.

55.

56.

58.

The metals normally used in a HRC fuse are :
(A) Tin and lead (B) Tin and Silver
() Aluminium and lead (D) Aluminium and Copper

The transient stability of a power system can be improved by :
(A) Using rotor of lower Moment of Inertia for generator
(18) Using parallel lines X
(0 Using low system voltage
{D) None of the above

For economic load dispatch :
(ക) Tneremental efficiency of each machine should be same
(B) Ineremental production cost of each machine should be same
(0 TIncremental fuel cost of each machine should be same
(D) None of the above.

In a power system, the cost of generated electrical enegry will be low if :
(ಗಿ) both load factor and diversity factor are low
(B) both load factor and diversity factor are high
(C) ‏دما‎ factor high. Diversity factor low
(D) ‏وما‎ factor low, Diversity factor high

An over exited synchronous machine has a lagging powerfactor. The machine is :
(5) Motoring (18) Generating
(C) Floating (D) Can be Generating or motoring

Which among the following is/are CORRECT about an RC phase shift oscillator?
ഗു സം RC network provides a phase shift of 180°
(B) It makes use of positive feedback
(C) Loop gain of the oscillator is almost one
(D) All the above

In class B operation of power amplifiers, the collector current flows for :
(ಗೆ) Less than a quarter of a cycle (8) The whole cycle
(C) Half the cycle (D) Less than half a eycle

For the characteristic equation 28* + §% +358? +5s+10=0, the number of roots in the left
half S plane is :

ക്ര 2 ക

2 8 (1) 4

9 030/2016
P.1.0]