# The intensity of radiation of a dipole depends strongly on frequency. If at a frequency f, Mtensity of radiation is I, then at a frequency of f/2, intensity will be

1.  I/2

2.  I/4

3.  I/8

4.  I/16

4

I/4

Explanation :
No Explanation available for this question

# A bulb in a staircase has two switches, one switch being at the ground floor and the other one at the first floor. The bulb can be turned ON and also can be turned OFF by any one of the switches irrespective of the state of the other switch. The logic of switching of the bulb resembles

1.  an AND gate

2.  an OR gate

3.  an XOR gate

4.  a NAND gate

4

an XOR gate

Explanation :
No Explanation available for this question

# Consider a vector field    The closed loop line integral    can be expressed a

1.   over the closed surface bounded by the loop

2.  over the closed volume bounded by the loop

3.  over the open volume bounded by the loop

4.    over the open surface bounded by the loop

4

over the open surface bounded by the loop

Explanation :
No Explanation available for this question

# Two systems with impulse responses h1(t) and h2(t) are connected in cascade. Then the overall impulse response of the cascaded system is given by

1.  Product of h1(t ) and h2(t)

2.  Sum of h1(t ) and h2(t)

3.  Convolution of h1(t ) and h2(t)

4.  Subtraction of h2(t) and h1(t)

4

Convolution of h1(t ) and h2(t)

Explanation :
No Explanation available for this question

# In a forward biased pn junction diode, the sequence of events that best describes the mechanism of current flow is

1.  injection, and subsequent diffusion and recombination of minority carriers

2.  injection, and subsequent drift and generation of minority carriers

3.  extraction, and subsequent diffusion and generation of minority carriers

4.  extraction, and subsequent drift and recombination of minority carriers

4

injection, and subsequent diffusion and recombination of minority carriers

Explanation :
No Explanation available for this question

# In IC technology, dry oxidation (using dry oxygen) as compared to wet oxidation (using steam or water vapor) produces

1.  superior quality oxide with a higher growth rate

2.  inferior quality oxide with a higher growth rate

3.  inferior quality oxide with a lower growth rate

4.  superior quality oxide with a lower growth rate

4

superior quality oxide with a lower growth rate

Explanation :
No Explanation available for this question

# The maximum value of θ until which the approximation sin θ≈ θ holds to within 10 error is

1.  10

2.  18?

3.  50?

4.  90?

4

50?

Explanation :
No Explanation available for this question

# The divergence of the vector field    is

1.  0

2.  1/3

3.  1

4.  3

4

3

Explanation :
No Explanation available for this question

# The impulse response of a system is h(f)=tu(f)  For an input u(t-1) the output is

1.

2.

3.

4.

4

Explanation :
No Explanation available for this question

1.  39.8/s

2.  39.8/s2

3.  32/s

4.  32/s2

4