Question66:-The ripple factor in a rectifier circuit indicates
A:-amount of a.c. voltage present in output
B:-amount of d.c. voltage present in output
C:-change in d.c. voltage when input a.c. changes
D:-change in d.c. voltage when load. changes
Correct Answer:- Option-A
Question67:-The cathod of a zener diod in a voltage requlator is normally
A:-more positive than the anode
B:-more negative than the anode
C:-at +0.7 V
D:-grounded
Correct Answer:- Option-A
Question68:-An oscillator differs from an amplifier because
A:-it has more gain
B:-it requres no input signals
C:-it requres no d.c. supply
D:-it always has the same output
Correct Answer:- Option-B
Question69:-If maximum and minimum amplitudes of an amplitude modulated waves are 10V and 5V respectively, the
modulation index is
‏2ھ‎
‎6-0.5
‎6:33
‎D:-0.33
‎Correct Answer:- Option-D
Question70:-Thermal runaway is not possible in FET because as the temperature of FET increases
A:-the mobility decreases
B:-the transconductance increases
C:-the drain current increases
D:-none of the above
Correct Answer:- Option-A
Question71:-The dimension of Cantor set is
ಹಿಂ
B:-0.631
C:-1.683
0-1
Correct Answer:- Option-B
Question72:-The fixed points of the Logistic map + (7+1)` = चः (7)}` பற) ௯
:-x=0 and x=1-"(1)/(a)"
0 and x=1/a
1 and x=1/a
பவ காய ஙு
Correct Answer:- Option-A
Question73:-A stable and unstable fixed point collide each other and vanish as the control parameter is decreased in
A:-Hopf bifurcation
B:-Pitchfork bifurcation
C:-Transcritical bifurcation
D:-Saddle node bifurcation
Correct Answer:- Option-D
Question74:-If 10> and 11> are eigen states of number operator which of these represent a state orthogonal to
ലു + 11>}
ക ൮/2)” (10> - 11>}
8:- ൮/2)” (05 4 115)
രഃ
0:0௦
Correct Answer:- Option-A
Question75:-If In> represent an eigen vector of number operator with eigen value n, the state ataataln> has eigen value™ *
ಹಗ
B:-n+1