കാ
8-3 MHz

೦2೫%

5:26 MHz

Correct Answer: Option-C

Question13:-In a gallium arsenide LED, of the photons incident from the GaAs on the GaAs-air interface are reflected back in to the semiconductor. Refractive index of
GaAs (at a wavelength 700 nm)= 3.50,

696ھ
2:596
6ای
5:4896
‎Correct Answer: Option-C‏
‎Question14:-The rate of change of output voltage of an op-amp integrator. in response to a step input is set by‏
‎ARC time constant‏
‎B:-the current through the capacitor‏
‎Czthe amplitude of the step output‏
‎Dell the above‏
‎Correct Answer:- Option-D‏
‎What are the values of Vn. and Vs‏ . 34 ے ‎Question15:-For the given n-channel JFET circuit, I,‏

7 سس"
3.120 = .2200010 :8
‎ಯ್ಯ, 233201; = 2007‏
‎ലമ‏

Correct Answer: 8

Question16:-The antenna current of an AM transmitter is 20 A when only the carrier is sent. If the transmitter current increases to 10.87 A on modulation with a single sine wave, what
will be the percentage modulation?

13%
B:-36%
೦60%
D:87%
Correct Answer: Option-C
Question17:-An amplifier with resistive negative feedback has two left half plane poles in its open loop transfer function. The amplifier
‘Acwill be stable for all frequencies
B:-may be unstable depending on the feedback factor
C-will always be unstable at high frequencies
D:-will oscillate at low frequencies
Correct Answer:- ೦೧000

Question18::Which of the following is not true for Hermite polynomials?
ടു.

கப)

पमो - 2७, (०) ‏ولاق‎ |

A-Only statement (i)
B-Only statement (i)

C-Only Statement (i)