Electrical Engineering (EE)

 Which of the following is a positive real function?
  • a)
  • b)
  • c)
  • d)
Correct answer is option 'B'. Can you explain this answer?

SHUBHAM KUMAR answered  •  1 hour ago
Hence, notaPRF.
has a zero (s = 1) in RH s-plane.
Hence, not a PRF.
  has a pole and a zero in RH s-piane. 
Hence, not a PRF.
Option (b) is a PRF as all poles and zeros lie in LH s-plane.

in present day measurement systems
  • a)
    direct methods are commonly used
  • b)
    use of direct methods is limited but indirect methods are commonly used '
  • c)
    both direct and indirect methods are commonly used
  • d)
    none of the above
Correct answer is option 'B'. Can you explain this answer?

ROHIT BISHT answered  •  1 hour ago
Measurement by direct methods are not always possible, feasible and practicable. In most of the cases direct method of measurements are inaccurate because they involve human factors. Moreover, they are less sensitive. Due to these reasons use of direct method of measurement is limited while indirect methods are commonly used

 The equivalent capacitance across the given terminals A-B is
  • a)
    1/2μF
  • b)
    3/4μF
  • c)
    1/8μF
  • d)
    4/3μF
Correct answer is option 'B'. Can you explain this answer?

KSHITIJ SURI answered  •  1 hour ago
The equivalent combination of C2 and C3.
The equivalent combination of this 1 μF and  
C1 = 2μF is
C1+ 1 μF = 3μF
Hence, the equivalent capacitance between terminals A and B is

Select the possible dc magnetization characteristics of permanent magnetic materials.
  • a)
  • b)
  • c)
  • d)
Correct answer is option 'A'. Can you explain this answer?

SUKHMANDEEP SINGH answered  •  12 hours ago
The magnetic field has a positive value when the magnetic field intensity, H has negative value due to coercivity property. We use second quadrant of hysteresis loop.

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