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0 answers 27 views

In the case of second order differential equation if the damping ratio is unity, then the poles are  A) Equal, positive and real B) Imaginary and complex conjugate C) Equal, negative and real D) None of the above

asked Apr 9, 2018 in High voltage engineering by Shimroz123
1 answer 12 views

Maxwell's bridge is used to measure (A) Inductance (B) Frequency (C) Capacitance (D) Resistance

asked May 13, 2018 in Electrical Measurements and Instrumentation by Shimroz123
0 answers 21 views

Which parameter or quantity may be measured by use of Maxwell's Bridge ? (A) Resistance (B) Capacitance (C) Inductance (D) Frequency

asked Apr 14, 2018 in Electrical Engineering by Shimroz123
1 answer 9 views

 Maxwell's inductance - capacitance bridge is used for measurement of Inductance of: -  a) Low Q coils b) Medium Q coils c) High Q coils d) Low and medium Q coils

asked Apr 10, 2018 in Instrumentation and control by Shimroz123
0 answers 33 views

The characteristic equation of a simple servo system is s2+6s+25=0. Damping factor of the system is: A) 3.2 B) 2.4 C) 1.8 D) 2.9

asked Jun 17, 2018 in Electrical Engineering by Shimroz123
2 answers 49 views

What is Ampere's law equation?

asked May 29, 2018 in Ampere’s Law by Shimroz123
1 answer 11 views

The angle δ in the swing equation of a synchronous generator is the  (A) angle between stator voltage and current (B) angular displacement of the rotor with respect to the stator (C) angular displacement of the stator mmf with respect to a synchronously rotating axis. (D) angular displacement of an axis fixed to the rotor with respect to a synchronously rotating axis

asked May 17, 2018 in Synchronous machine by Shimroz123
1 answer 23 views

The characteristic equation for a closed loop system with forward gain K is s4 + 4s3 + 8s2 + 6s + K = 0. The critical gain value Kc for stability should not exceed  (a) 3.25 (b) 9.75 (c) 13.0 (d) 23.3

asked May 15, 2018 in Control System by Shimroz123
1 answer 6 views

The swing equation for a synchronous machine is based on (A) relative motion between load angle and stator magnetic field (B) maximum power flow possible through a particular point (C) net torque and angular displacement (D) relation between excitation voltage and excitation current

asked Apr 25, 2018 in Electrical Engineering by Shimroz123
1 answer 17 views

A discrete time system is stable if all the roots of the characteristic equation. lie (a) Outside the circle of unit radius (b) Within the circle of unit radius (c) Outside the circle of radius equal to 3 -units (d) On the circle of infinite radius

asked Apr 23, 2018 in Control System by Shimroz123
0 answers 35 views
asked Apr 10, 2018 in Electrical Engineering by Narendra
0 answers 144 views

The system described by the characteristic equation S4 +2S3 +3S2 +4s+5=0 has  A) No roots have positive real part B) One root has positive real part C) Two roots have the positive real parts D) None of these

asked Apr 9, 2018 in Electronics Engineering by Shimroz123
0 answers 30 views

In the solution of load flow equation, Newton Raphson (NR) method is superior to the GaussSeidal (GS) Method, because the:  (A) Convergence characteristic of the NR methods are not affected by selection of slack bus (B) Number of iterations required in the NR method is not independent of the size of the system (C) Time ... the NR method is less when compared to the GS method (D) Number of iteration required in the NR method is more than compared to that in the GS method 

asked Apr 5, 2018 in Electrical Engineering by Shimroz123
1 answer 37 views

If the characteristics equation of a closed loop system is s2+2s+2=0, then the system is  (A) Over damped (B) Critically damped (C) Under damped (D) Undamped 

asked Apr 5, 2018 in Electrical Engineering by Shimroz123
0 answers 119 views

What is the order of the characteristic equation of an armature controlled DC motor?  (A) First order equation (B) Second order equation (C) Zero order equation (D) Third order equation 

asked Apr 5, 2018 in Electrical Engineering by Shimroz123
0 answers 18 views

Which among the following is the equation for the number of independent loops for a network with n nodes and b branches?  (A) n-1 (B) b+n-1 (C) b-n+1 (D) b-n

asked Apr 5, 2018 in Electrical Engineering by Shimroz123
0 answers 15 views

The equation V·j = 0 is known as : (A) Poissons’s equation (B) Laplace equation (C) Continuity equation (D) Maxwell equation

asked Mar 31, 2018 in Electrical Engineering by Shimroz123
0 answers 66 views

In a network containing resistances and reactances the roots of the characteristic equation give for the circuit : (A) The forced response (B) The total response (C) The natural response (D) The damped response

asked Mar 31, 2018 in Electrical Engineering by Shimroz123
2 answers 238 views

The equation of 50 Hz current sine wave having r.m.s. value of 60 A is?

asked Mar 25, 2018 in Electrical Engineering by Shimroz123
1 answer 41 views

What is the EMF equation of the transformer?

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0 answers 30 views

How many calories does an electric heater of 100 watts generates per second?

asked Sep 15, 2018 by anonymous
1 answer 23 views

Draw and explain the response of first order and second order instruments to the step input.

asked Sep 13, 2018 by Shimroz123
1 answer 87 views

Explain Faraday’s second law of electrolysis and give its expression. 

asked Sep 3, 2018 by Shimroz123
1 answer 34 views

The second harmonic distortion is defined as the A) Ratio of amplitude of second harmonic component in the output to that of the fundamental frequency B) Harmonic distortion due to only second harmonic component C) Sum of distortion of first and second harmonic components in the output 

asked Jun 18, 2018 in Electronics Engineering by Shimroz123
1 answer 21 views

A large hydropower station has a head of 324 metre and an average flow of 1370 metre3 / second. The available hydraulic power from this station will be: A) 4.35 MW B) 4.15 MW C) 4.47 MW D) 4.73 MW

asked Jun 4, 2018 in Electric Power Generation by Shimroz123
0 answers 24 views

A lag-lead compensator for a second order system (A) improves steady state errors, reduces relative stability (B) marginally improves steady state errors, increases relative stability (C) reduces steady state errors, increases relative stability (D) improves both transient response and steady state response 

asked Jun 4, 2018 in Control System by Shimroz123
1 answer 23 views

The analog signal given below is sampled by 600 samples per second for m(t) = 3 sin 500 pt + 2 sin 700 pt then folding frequency is: (1) 500 Hz (2) 700 Hz (3) 300 Hz (4) 1400 Hz 

asked May 28, 2018 in Analog electronics circuits by Shimroz123
0 answers 13 views

For a desirable transient response of a second order system, the damping ratio must be between (a) 0.4 and 0.8 (b) 0.8 and 1.0 (c) 0.3 and 0.5 (d) 0.2 and 0.4

asked May 25, 2018 in Control System by Shimroz123
1 answer 27 views

For a 1.8o, 2-phase bipolar stepper motor, the stepping rate is 100 steps/second. The rotational speed of the motor in rpm is  (A) 15 (B) 30 (C) 60 (D) 90

asked May 17, 2018 in Electrical Machine by Shimroz123
1 answer 8 views

Nano Second is the ____.  a) Millionths of a second b) Billionths of a second c) Trillionth of a second d) Thousands of a second

asked May 13, 2018 in Computer Engineering by Shimroz123
1 answer 25 views

A transfer function has a second order denominator and constant gain in the numerator

asked May 3, 2018 in Control System by Shimroz123
1 answer 21 views

A second order system shows 100% overshoot in its unit step response. It can be categorized as (A) underdamped system. (B) overdamped system. (C) Critically damped system. (D) undamped system.

asked Apr 28, 2018 in Control System by Shimroz123
0 answers 30 views

The second break down in power BJT occurs due to (a) The first break down and the formation of hot spot inside (b) excessive collector current and low collector emitter voltage (c) excessive base current and high collector emitter voltage (d) none of thee above

asked Apr 14, 2018 in Electrical Engineering by Shimroz123
1 answer 15 views

The current in a 200 mH coil increases from 2 to 5 A in 0.1 Second. What is rate of change of current? A. 30 A/s B. 20 A/s C. 10 A/s D. none of these

asked Apr 12, 2018 in Electrical Engineering by Shimroz123
0 answers 29 views

The step angle of the stepper motor is 2.5°. If the stepping frequency is 3600 pulses per second, then the shaft speed will be   (a) 144 rps (b) 3600 rps (c) 25 rps (d) 2.5 rps 

asked Apr 10, 2018 in Electrical Engineering by Shimroz123
1 answer 30 views

The coefficient of coupling between two coils is 0.45. The first coil has an inductance of 75 mH and the second coil has an inductance of 105 mH. What is the mutual inductance between the coils?  (1) 3.54 mH (2) 7.88 mH (3) 39.9 mH (4) 189.3 mH

asked Apr 9, 2018 in Electronics Engineering by Shimroz123
0 answers 8 views

In a second order system the value of resonant peak will be unity when the damping ratio has a value of  A) Zero B) Unity C) 0.707 D) 0.414

asked Apr 9, 2018 in Control System by Shimroz123
1 answer 12 views
1 answer 18 views

Joule X second is the unit of?

asked Sep 20, 2017 in Electrical Engineering by Quiz
0 answers 45 views
asked Dec 20, 2018 by anonymous
0 answers 64 views
asked Nov 27, 2018 by Siddeshwar Merugu
2 answers 40 views

Classify transducer. Write one sentence about each of them.

asked Sep 14, 2018 by Shimroz123

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