Most viewed questions

1 answer 2,714 views

Which of the following instruments can be used to measure AC current only? (a) Permanent Magnet Type ammeter(b) Induction type ammeter (c) Moving iron voltmeter(d) Moving iron ammeter

asked Mar 28, 2018 in Electrical Measurements and Instrumentation by Shimroz123
1 answer 2,236 views

What is Mailbox? Write a note on Mailbox.

asked Jan 27, 2018 in Embedded System Design by Shimroz123
1 answer 1,937 views

What are the components of system bus? A) CPU Bus, Address Bus, Data Bus B) Memory, Control Unit, ALU C) Data Bus, Address Bus, Control Bus D) Register, PC, IR

asked Jun 18, 2018 in Computer Engineering by Shimroz123
0 answers 1,386 views

In an amplitude modulated system if the total power is 600W and the power in the carrier is 400W, the modulation index is  a. -0.5 b. 0.75 c. 0.9 d. l

asked Apr 9, 2018 in Electronics Engineering by Shimroz123
0 answers 1,345 views

What is resonance in a Sonometer?

asked May 25, 2018 in Resonance by Shimroz123
1 answer 1,275 views

The unit of power in S.I. units is

asked Mar 22, 2018 in Engineering Mechanics by Shimroz123
0 answers 1,175 views

A combination of various colors used for text and other presentation elements is called  (1) Fill effect (2) Template (3) Color scheme (4) C-set 

asked Apr 10, 2018 in Computer Engineering by Shimroz123
7 answers 1,161 views

Draw the structural diagram of GTO. Explain briefly the switching behavior of GTO with the help of appropriate voltage and current waveform.

asked Aug 8, 2017 in Unit 1 by Zeeshan
1 answer 1,155 views

What is Analog to Digital Converter (ADC) ?

asked Aug 9, 2017 in Electronics Engineering by Zeeshan
1 answer 998 views

Explain the formation of parasitic BJT and parasitic diode in Power MOSFET. Can parasitic diode be used in same power electronics applications?

asked Feb 6, 2018 in Unit 1 by Quiz
1 answer 993 views

What does the AND gate do?

asked Dec 15, 2017 in Digital Electronics by Quiz
0 answers 960 views

What is the difference between linear and nonlinear electrical loads?

asked Mar 10, 2018 in Power quality by Quiz
1 answer 945 views

The motor used for electric traction is  (1) D.C. shunt motor (3) D.C. series motor  (2) D.C. compound motor (4) Synchronous motor

asked May 1, 2018 in Utilization of electrical energy by Shimroz123
1 answer 916 views

Forces are called concurrent when their lines of action meet in?

asked Mar 22, 2018 in Engineering Mechanics by Shimroz123
1 answer 866 views

The capacity of a battery is measured in (a) Watts (b) Watt-hours (c) Amperes (d) Ampere-hours 

asked May 25, 2018 in Battery by Shimroz123
0 answers 804 views

In river crossing, hilly terrain, modern HV lines have span more than (a) 50 m (c) 500 m (b) 100 m (d) 800 m

asked Apr 14, 2018 in Electrical Engineering by Shimroz123
2 answers 791 views

EPROM internal structure

asked Aug 3, 2017 in Unit 3 by Zeeshan
0 answers 687 views

A system with gain margin close to unity or a phase margin close to zero is (a) conditionally stable (b) relatively stable (c) highly stable (d) highly oscillatory

asked May 25, 2018 in Control System by Shimroz123
0 answers 681 views

A motor load system is stable when the slope of the torque speed characteristics of the motor is (a) higher than the slope of the torque speed characteristics of the load (b) lower than the slope of the torque speed characteristics of the load (c) zero (d) none of the above

asked Apr 14, 2018 in Electrical Engineering by Shimroz123
2 answers 673 views

Difference between STATCOM and SVC?

asked Aug 9, 2017 in Flexible AC Transmission System by Zeeshan
1 answer 668 views

basic gate drive circuit of GTO

asked Nov 14, 2017 in Power Electronics by Quiz
1 answer 659 views

State the working principle and operation of Automatic power factor controller used in Transmission and Distribution system.

asked Oct 3, 2018 in Energy Conservation And Audit by Shimroz123
1 answer 650 views

Explain any two energy conservation techniques in fan.

asked Sep 22, 2018 in Energy Conservation And Audit by Shimroz123
0 answers 627 views

What is the power factor of a cable of loss angle “ө”?  (A) sin ө (B) cos ө (C) tan ө (D) Independent of ө 

asked Apr 5, 2018 in Electrical Engineering by Shimroz123
0 answers 623 views

The rotor of a stepper motor has no   (a) Winding (b) Commutator (c) Brushes (d) All of the above 

asked Apr 10, 2018 in Electrical Engineering by Shimroz123
1 answer 610 views

State the advantages of adoption of cogeneration system in an industry.

asked Oct 3, 2018 in Energy Conservation And Audit by Shimroz123
5 answers 608 views

what is voltage?

asked Aug 3, 2017 in Electrical Engineering by Zeeshan
1 answer 606 views

The phase difference between voltage and current wave through a circuit element is given as 30°. The essential condition is that?

asked Mar 24, 2018 in Electrical Engineering by Shimroz123
2 answers 596 views

What is a BJT?

asked Mar 10, 2018 in Electronics Engineering by Quiz
1 answer 593 views

In a step-up or step-down transformer, electrical power is transferred from one circuit to another without change in

asked May 14, 2018 in Transformer by Shimroz123
0 answers 591 views

Schmitt trigger is an example of a  A) Mono-stable multivibrator B) Bistable multivibrator C) Astable multivibrator D) None of the above

asked Apr 9, 2018 in Electronics Engineering by Shimroz123
1 answer 589 views

Draw a neat labelled diagram of feeding post and write any four points related to it.

asked Sep 2, 2018 by Shimroz123
0 answers 572 views

What is analog in terms of electronics?

asked Mar 10, 2018 in Analog electronics circuits by Quiz
1 answer 569 views

Draw power and control circuit for simple plugging of induction motor.

asked Sep 2, 2018 by Shimroz123
1 answer 562 views

Epoxy resin transformers are more suitable in hazardous areas. Give reason.

asked Oct 3, 2018 in Energy Conservation And Audit by Shimroz123
1 answer 558 views

Explain thermal power plant with diagram.

asked Jun 23, 2018 in Electric Power Generation by anonymous
17 answers 554 views

Which device use to convert DC to AC?

asked Dec 9, 2017 in Power Electronics by Quiz
1 answer 547 views

The turns ratio required to match an 80 ohms source to a 320 ohms load is? A.80 B.20 C.4 D.2

asked May 15, 2018 in Basic concepts by Zeeshan
0 answers 544 views

A 30 MVA, 15 KV, 1500 rpm, 3 phase synchronous generator connected to a power grid has a synchronous reactance of 9 ohm per phase. If the exciting voltage is 12 kV (line to neutral) and the system voltage is 17.3 kV (line to line), Calculate the maximum power that generator can deliver before it falls out of step (losses synchronous).  (A) 39.952 MW (B) 78.349 MW (C) 16.67 MW (D) 112.89 MW

asked Apr 5, 2018 in Electrical Engineering by Shimroz123
0 answers 542 views

The term ‘SATA’ is associated with which of the following appliances/equipments  A) Washing Machine B) Wet Grinder C) Mixer D) Computer

asked Apr 9, 2018 in Computer Engineering by Shimroz123
1 answer 540 views

Reduction in core losses and increase in permeability are obtained with transformer employing?

asked Mar 19, 2018 in Transformer by Shimroz123
0 answers 536 views

Why dc series motor should not be started at no load?

asked Mar 15, 2018 in Electrical Engineering by Quiz
0 answers 535 views

A single FSM can be converted to two smaller FSM. Justify.

asked Mar 28, 2018 in Embedded System Design by Quiz
1 answer 518 views

In the Bode plot of a unity feedback control system, the value of phase of G(jw) at the gain cross -over frequency is - 125°.. The phase margin of the system is (a) - 125° (b) - 55° (c) 55° (d) 125°

asked Apr 23, 2018 in Control System by Shimroz123
1 answer 516 views

A single-phase induction motor with only the main winding excited would exhibit the following response at synchronous speed  (A) Rotor current is zero (B) Rotor current is non-zero and is at slip frequency (C) Forward and backward rotating fields are equal (D) Forward rotating field is more than the backward rotating field

asked May 18, 2018 in Induction Machine by Shimroz123
0 answers 506 views

The cascade amplifier is a multistage configuration of (A) CE-CC (B) CE-CB (C) CC-CB (D) CB-CC

asked Apr 25, 2018 in Electrical Engineering by Shimroz123
1 answer 487 views

Explain the principle of ON-OFF control and phase control of AC voltage controller with suitable circuit and waveforms.

asked Feb 14, 2018 in Unit 6 by Quiz

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