# Two magnetically uncoupled inductive coils have Q factor q1 and q2 at the chosen operating frequency. Their respective resistances are R1 and R2. When connected in series, their effective Q factor at the same operating frequency is

1.  q1 + q2

2.  (1/q1) + (1/q2)

3.   (q1R1 + q2R2)/(R1 + R2)

4.   (q1R2 + q2R1)/(R1R2)

4

(1/q1) + (1/q2)

Explanation :
No Explanation available for this question

# Boolean expression for the out of the logic circuit shown in the figure is

1.  Y = AB + AB +C

2.  Y =    + AB +

3.  Y = A  +  B +C

4.  Y =AB +  B +

4

Y =    + AB +

Explanation :
No Explanation available for this question

# what is pn junction

1.  dfd

2.  fdsgfg

3.  gdf

4.  fhty

5.  tyt

5

gdf

Explanation :
No Explanation available for this question

# The DIR commands in DOS operating system

1.  copies files

2.  erases files

3.  extracts a list of file names

4.  none of these

4

extracts a list of file names

Explanation :
No Explanation available for this question

# When the ERASE command is used

1.  the file content is erased

2.  the file name is deleted from the directories on the disk

3.  both a and b

4.  none of these

4

the file name is deleted from the directories on the disk

Explanation :
No Explanation available for this question

# The circuit shown in figure supplies power to an 8 ohms speaker, LS. The values of IC and VCE for this circuit respectively will be

1.  7.352A,07V

2.  6.325A,0.7V

3.  6.325A,0.51V

4.  7.325A, 0.51V

4

7.352A,07V

Explanation :
No Explanation available for this question

# An npn transistor under forward active mode of operation is biased at IC=1mA and has atotal emitter base capacitance CK of 12pF, and the base transit time τF of 260psec. Under this condition depletion capacitance of the emitter base junction is [use VT=26mV]

1.  0.2pF

2.  0.6pF

3.  1pF

4.  2pF

4

2pF

Explanation :
No Explanation available for this question

# The probability of density function of the evelope of a sinusoidal signal along with narrow band noise which of the following distribution

1.  Gaussian

2.   Rayleigh

3.  Rician

4.  Poisson

4

Rician

Explanation :
No Explanation available for this question

# The mean square value of the shot noise current

1.  varies inversely as average current

2.  is independent of average current

3.  varies as √ average current

4.  varies directly as average curre

4

varies as √ average current

Explanation :
No Explanation available for this question

# The power spectral density of white noise

1.  varies as square root of frequency

2.  varies as inverse of frequency

3.  varies as square of frequency

4.  is constant with frequency

4