Reversing the rotation of BLDC motor can be done by Reversing phase sequence Reversing supply terminal O Changing logic sequence Direction can't be changed

Q: Synchronous condenser is nothing but a.

A: Synchronous condesor is also known as synchronous capacitor or synchronous compensator.

Q: 10. You're going to connect a surge protection device to a separately derived electrical system. In…

A: Based on the power system protection

Q: Explains phase shift keying with example,it's genaration technigues ,it's advantage,disadvantage and…

A: to explains phase shift keying with example, it's generation techniques , it's advantage,…

Q: The NEC does not require a separate overcurrent protective device or disconnect when a power factor…

A: Capacitors are used for power factor correction of motors so that more reactive power demand can be…

Q: a generator has a capacity of 2000KVA and 10% of internal percentage reactance, for symmetric fault…

A: (MVA)old = 2000 MVA (MVA)new = 5000 MVA %Xold = 10 %

Q: Counters in phase correct mode are

A: We are authorized to answer one question at a time, since you have not mentioned which question you…

Q: Fill in the blank: In splicing the fiber alignment can be tuned using a visual fault locator.

A: In... Splicing the fibre alignment can be tuned using a visual fault locator.

Q: a 3-phase dual-voltage motor may have____ leads

A: 3-phase dual-voltage motor:-  A three-phase motor that operates on two different voltage levels and…

Q: Discuss different types of Air blast circuit breakers. Explain with the help of neat and clean…

A: The air blast circuit breaker, according to the type of flow of blast of air is of three types. 1.…

Q: 10.18 (a) Draw the protective zones for the power system shown in Figure 10.45. Which cir- cuit…

A: .    The protective zones are drawn with the dashed lines as shown in the figure above.

Q: By using normal operating conditions in a short span. the system can be restored to O High speed…

A: By using High speed Restoring fuse the system can be restored to normal operating condition in a…

Q: There are the available options for the pilot, In case of a single generator failure in large…

A: Their are two main generators are present in the aircraft and one backup generator is also present…

Q: if an fir has 27 taps, how many unit delay elements are needed

A: FIR filter has 27 taps then how many unit delay elements are needed ?

Q: Ripple counters are also called Synchronous counters VLSI counters SSI counterS O Asynchronous…

A: Ripple counter may be a special sort of Asynchronous counter during which the clock pulse ripples…

Q: Which among these is the advantage of synchronous condensers? O The maintenance cost is low. O The…

A:

Q: Question 4 A star connected neutral grounded 3-phase synchronous generator consists of 0.1 p.u of…

A: In this question we need to find a zero sequence reactance of genrator

Q: Choose the correct statement. A step-up power transformer has "a" greater than 1. O A step-up power…

A: In this question we need to choose a correct option.

Q: Power will be consumed by the moto. it the blanks: 1. The two windings of a transformer is ...linked…

A:

Q: In high voltage AC transmission system, the reactive power compensation is commonly used.

A: There are several methods for reactive power compensation such as static VAR compensator,…

Q: 12.a. The easiest place to install an ammeter into a stepper motor driver/motor circuit for system…

A: Here we deal with the MCQs. as given related to the stepper motor.

Q: Blocks in power supply system does NOT include A.Regulator B.Solar panel C.Transformer…

A:

Q: (i) Describe briefly the main features of the basic cyclic redundancy check (CRC) algorithm.

A: The Cyclic redundancy check is an error coding technique which is used in digital electronics…

Q: Voltage control method connected across the load, to supply part of VAR required is O Shunt…

A: In this question we will define which voltage control method supply var connected across load...

Q: Q1: design a synchronous counter with sequence One, Four, Seven, one, .. .... Hint: the counter is…

A:

Q: select the right answer: The remainder in cyclic redundancy checking represents the a. The CRC b.…

A: the error

Q: what is the kVA rating of the synchronous motor

A: Three Phase Synchronous machine- This Synchronous machine comprises of rotor and stator as it basic…

Q: The sync be regula speed.

A:

Q: Draw a WIRING DIAGRAM for wiring One Way - One Gang Switch (S) to control Tungsten Lamp (L) using…

A: The wiring diagram for one way-one gang switch to control tungsten light using timer relay for the…

Q: Identify the position of plunger in a LVDT in which emf induced in upper secondary coil is lesser…

A:

Q: Measurement CT should not saturate by design during fault

A: Measurement CT should not saturate by design during fault  This statement is false and true.

Q: Which part of the pressure to current converter is known as sensor? O a. Pivoted beam Ob. LVDT O C.…

A: Which part of the pressure to current converter is known as sensor?

Q: Load flow study is carried out for O Stability studies Fault calculations Load frequency control…

A: Given  Load flow study

Q: 3: Design a synchronous counter that can count the sequence (1, 9, 8) up and down.

A: In the below figure, a state diagram is shown for the UP and DOWN synchronous counter.

Q: surge protector working principal

A: we need to state the working principle of surge protector

Q: Load flow study is carried out for Stability studies Fault calculations System planning Load…

A: The load flow method is used to study the steady-state behaviour of the Power system. It gives an…

Q: What are auto reclosures

A: What are auto reclosures Define the auto reclosures.

Q: General Directions:  Answer as Directed   1.  Illustrate IC 555 timer as -Monostable Multivibrator…

A: The IC 555 timer monostable multivibrator circuit is shown below:  The Monostable 555 Timer circuit…

Q: 8) Interposing current transformer (CTs) are used with the electromechanical /static type…

A: The transformers can be classified according to their purposes. There is a Step-Up transformer that…

Q: concepts of a 3 phase synchronous moto

A: The motor is a device used for the conversion of electrical energy to mechanical output, there are a…

Q: Harmonics generated due to the presence of switching power electronic devices are called Answer:

A: Solution: Harmonics in a power system causes the power quality problems. The losses in the system…

Q: A certain unfiltered half wave rectifier circuit is powered by the 120 Vrms ac power system and the…

A:

Q: draw three phase autotransformer step up and step down (show the difference) with voltage magnitude…

A: A three-phase autotransformer can be understood as three single-phase autotransformers connected in…

Q: the most common failure with item with a three-phase induction motor system is the

A:

Q: 5) The method (s) to improve the Power Factor: a. Use of synchronous motors. b. Use of synchronous…

A:

Q: DIFFERENTIATE THE 3-TYPES OF THREE-PHASE MOTOR.

A: To convert a electrical power to mechanical power, electric motors are used.electrical power feed…

Q: A single phase full wave AC voltage controller has a resistive load of 5 ohms and an input voltage…

A: Thyristor maximum RMS value occurs at α=0, So by putting α=0 in RMS current equation and average…

Q: 7) A harmonic restrain feature is used in a relay for transformer protection to Increase the relay…

A:

Q: Quèstion 4 Protective relays can not prevent the faults in power system True False

A: A protective relay is a relay device designed to trip a circuit breaker when a fault is detected.…

Q: For motor branch circuits, the maximum setting of a conventional inverse-time circuit breaker must…

A: For motor branch circuits, the maximum setting of a conventional inverse-time circuit breaker must…