# Photo voltaic emf of a Ge photo voltaic cell is of the order of

1.  0.1volt

2.  0.5volt

3.  1.1volt

4.  1.72 volt

4

1.1volt

Explanation :
No Explanation available for this question

# Photo voltaic emf of a Si photovoltaic cell is of the order of

1.  0.1volt

2.  0.5 volt

3.  1.1volt

4.  1.72volt

4

0.5 volt

Explanation :
No Explanation available for this question

# Conversion efficiency of a silicon solar cell is about

1.  5%

2.  10%

3.  14%

4.  25%

4

14\%

Explanation :
No Explanation available for this question

# LED gives off visible light from

1.  region of depletion layer

2.  p region alone

3.  n region alone

4.  both p and n regions

4

p region alone

Explanation :
No Explanation available for this question

# For 1≤t≤2, the phase deviation is

4.  0

4

Explanation :
No Explanation available for this question

# The emf across a photovoltaic cell is approximately proportional to

1.  F

2.  √F

3.  ln F

4.  F2

4

√F

Explanation :
No Explanation available for this question

# LEDs fabricated from GA As emit radiation in the

1.  ultra violet region

2.  infrared region

3.  visible region

4.  none of these

4

infrared region

Explanation :
No Explanation available for this question

# LEDs fabricated from Ga As permit radiation in the

1.  ultraviolet region

2.  infrared region

3.  visible region

4.  none of these

4

visible region

Explanation :
No Explanation available for this question

# Let message signal, m(t) = cos(4 π103t), and carrier signal, c(t) =5cos(2 πx106t) are used to generate a FM signal. If peak frequency deviation of the generated FM signal is three times the transmission bandwidth of the AM signal, then coefficient of the term cos(2π(1008x103)t) in the FM signal would be

1.  5J4(3)

2.  5/2J8(3)

3.   5/2J8 (4)

4.  5J4(6)

4

5J4(6)

Explanation :
No Explanation available for this question

# In a vector diode using alloy junction, the transition capacitance is proportional to

1.  Vj2

2.  1/Vj

3.  1/√Vj

4.  1/ Vj2 Where VJ is the magnitude of reverse junction voltage

4