117/2014

1.

Zero voltage regulation in a transformer occurs at :
(ಗಿ) zeropflead (छ) पक्क (C) leading p.f. (D) lagging p.f.

A parallel plate capaciior has 15 pF capacitance. 1 the linear dimensions of the plate are
doubled and the distance between the plates are also doubled, then new value of
capacitance would be :

(ക) 15 (8 (B} 308 (<) லய (0) 75/8

Resistance of a 230 V 100 W bulb is R, and that of a 230 V 75 15 ಸೃ. Then,
(A) Ry =R, (B] R >R, (€ 1 <} (D) सि = 2R,

The current in a series RL circuit with R=10 £} and L.=0.05 H is suddenly connected to a DC
voltage source of 200 V. The current in the series circuit, just after the switch is closed is
equal ‏ما‎

(A) 20 ^ (8) 10.75 ‰ )© 4000 A (2) zero

A ॐ V transformer has its LV side resistance of 0.06 p.u. The resistance referred to HV

sideis :
(^) 0.24 ४.४. (8) 0.06 ‏سم 0.03 )©( عدم‎ (D) 0.015 உட

Laplace transform of the function t%e ५ 16;

a 6 3 4
(ಗಿ) (s +a) 8 லர்‌ (^) (+कः 0) (s+a)t

‘The effect of addition of zero to the open loop transfer function is :

(ക) [യി the root locus to the right and to slow down the settling of response
(B) pulling the root locus to the left and to slow down the settling of response
(C) pulling the root locus to the left and to speed up the settling of response
(D) pulling the root locus to the right and 10 speed up the settling of response

Polar plot of a sinusoidal transfer function is a plot of :

(A) magnitude and phase angle (8) magnitude versus frequency
(C) phase angle versus frequency (D) none of the above

(7.7.0.