# An SCR having a turn ON time of 5 µsec, latching current of 50 mA and holding current of 40 mA is triggered by a short duration pulse and is used in the circuit shown in figure. The minimum pulse width required to turn the SCR ON will be

1.  251 µsec

2.  150 µsec

3.  100 µsec

4.   5 µsec

4

251 µsec

Explanation :
No Explanation available for this question

# The line-to-line induced emf (in volts), for a three phase star connection is approximately

1.  808

2.  888

3.  1400

4.  1538

4

1400

Explanation :
No Explanation available for this question

# The line-to-line induced emf (in volts), for a three phase connection is approximately

1.  1143

2.  1332

3.  1617

4.  1791

4

1143

Explanation :
No Explanation available for this question

# The fifth harmonic component of phase emf (in volts), for a three phase star connection is

1.  0

2.  269

3.  281

4.  808

4

0

Explanation :
No Explanation available for this question

# The initial accelerating power (in pu) will be

1.  1.0

2.  0.6

3.  0.56

4.  0.4

4

0.56

Explanation :
No Explanation available for this question

# the initial accelerating power is X pu, the initial acceleration in elect deg/sec2, and the inertia constant in MJ-sec/elect deg respectively will be

1.  31.4X, 18

2.  1800X, 0.056

3.  X/1800, 0.056

4.  X/31.4, 18

4

X/1800, 0.056

Explanation :
No Explanation available for this question

# An orthogonal set of vectors having a span that contains p, q, r is

1.  [-6 -3 6]T, [4 -2 3]T

2.  [-4 2 4]T, [5 7 -11]T, [8 2 -3]T

3.  [6 7 -1]T, [-3 12 -2]T, [3 9 -4]T

4.  [4 3 11]T, [1 31 3]T, [5 3 4]T

4

[4 3 11]T, [1 31 3]T, [5 3 4]T

Explanation :
No Explanation available for this question

# The following vector is linearly dependent upon the solution to the previous problem

1.  [8 9 3]T

2.  [-2 -17 30]T

3.  [4 4 5]T

4.  [13 2 -3]T

4

[13 2 -3]T

Explanation :
No Explanation available for this question

# What  is the SNR (in dB) of the ADC Also find the frequency (in decades) at the filter output at which the filter attenuation just exceeds the SNR of the ADC

4

Explanation :
No Explanation available for this question

# The iron loss (Pi) and copper loss (Pc) in kW, under full load operation are

1.  Pc = 4.12, Pi = 8.51

2.  Pc = 6.59, Pi = 9.21

3.  Pc = 8.51, Pi = 4.12

4.  Pc = 12.72, Pi = 3.07

4