The number of p-n junctions in a thyristor are 

A)1 B) 2 C) 3 D) 4

1 Answer

Answer :

The number of p-n junctions in a thyristor are  3

Related questions

Description : Consider the following statements regarding the formation of P-N junctions: 1. Holes diffuse across the junction from P-side to N-side 2. The depletion layer is wiped out. 3. There is continuous flow of current across the junction 4 ... correct? (a) 1 and 3 (b) 2 and 3 (c) 1 and 4 (d) 2 and 4

Last Answer : Ans: (c) When a pn-junction is formed, there will be diffusion of carries across the junctions followed by recombination, and the creation of a depletion layer across which a ... potential is established, which will prevent further diffusion of carries across the junction, leading to equilibrium

Description : Is gate turn on mechanism of GTO is similar to conventional thyristor?

Last Answer : Yes gate turn on mechanism of GTO is similar to conventional thyristor.

Description : In a thyristor, the magnitude of anode current will:

Last Answer : In a thyristor, the magnitude of anode current will: Not change with any variation in gate current

Description : A thyristor (SCR) turns off when the  A) Gate pulse is removed B) Gate pulse is applied C) Thyristor current is below holding value D) Anode voltage is made negative

Last Answer : A thyristor (SCR) turns off when the Thyristor current is below holding value

Description : Turn-on of a thyristor (SCR) takes place when  A) Anode to cathode voltage is positive B) Anode to cathode voltage is negative C) Positive current is applied to gate D) Anode to cathode voltage is positive and positive current pulse is applied to gate

Last Answer : Turn-on of a thyristor (SCR) takes place when Anode to cathode voltage is positive and positive current pulse is applied to gate

Description : Anode current in an thyristor is made up of   (A) electrons only (B) electrons or holes (C) electrons and holes (D) holes only

Last Answer : Anode current in an thyristor is made up of electrons and holes 

Description : In a thyristor, holding current is   (a) More than latching current IL (b) Less than IL (c) Equal to IL (d) Very small

Last Answer : In a thyristor, holding current is Less than IL

Description : Thyristor can be protected from over voltages by using

Last Answer : Thyristor can be protected from over voltages by using Voltage clamping device

Description : Leakage current flows through the thyristor in

Last Answer : Leakage current flows through the thyristor in Forward blocking mode and Reverse blocking mode.

Description : What is meant by firing angle of thyristor?

Last Answer : The point at which SCR is triggered is known as firings angle of thyristor.

Description : Is a SCR a thyristor?

Last Answer : Yes, SCR is a thyristor. Thyristor is the family and SCR is the member of that family but SCR is universally known as thyristor.

Description : How is a thyristor used to convert AC to DC?

Last Answer : thyristor

Last Answer : Yes ,it is one of the main advantage using thristors as a  switch in DC  circuit ,it has a high current gain

Description : Explain thyristor gate drive circuit.

Last Answer : Thyristor Gate Drive Circuit: The thyristor can be turned on by pulse voltage signal at gate terminal and it does not require continuous drive signal like the transistor. The gate ... circuit provide required minimum gate voltage and gate current then the thyristor conducts properly.

Description : In a thyristor D.C. chopper, which type of commutation results in best performance ?

Last Answer : voltage commutation

Description : parallel operation of MOSFET can be done more easily as compared to thyristor. why?

Last Answer : Parallel operation of MOSFET can be done more easily as compared to thyristor because the resistance of MOSFET is increases with increase in temperature. MOSFET have the positive temperature coefficient. In ... the parallel operation of MOSFET can be done more easily as compared to the thyristor.

Description : what are the disadvantages of thyristor?

Last Answer : Disadvantages of thyristor The silicon controlled rectifier (SCR) is unidirectional devices, so it can control power only in DC power during positive half cycle of AC supply. Thus only DC power is ... cycle. It cannot be used at higher frequencies. The gate current cannot be negative

Description : write short notes on thyristor CSI .

Last Answer : Current-source inverter (CSI) is an inverter with a DC current input. Current source inverters are most commonly used in very high power AC motor drives.

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

Last Answer : Gate Turn Off Thyristor (GTO) Conventional Thyristor can be turned on with gate terminal but can not turn off from gate terminal. But in case of Gate Turn Off Thyristor (GTO), we can turn it on and off ... subdivided as storage period (Ts), fall period (Tp) and tail period (Tt).

Description : 6 The blood-brain barrier, which restricts entry of many drugs into brain, is constituted by: A. P-glycoprotein efflux carriers in brain capillary cells B. Tight junctions between endothelial cells of brain capillaries C. Enzymes present in brain capillary walls D. All of the above

Last Answer : D. All of the above

Description : The blood-brain barrier, which restricts entry of many drugs into brain, is constituted by: A. P-glycoprotein efflux carriers in brain capillary cells B. Tight junctions between endothelial cells of brain capillaries C. Enzymes present in brain capillary walls D. All of the above

Last Answer : D. All of the above

Description : The blood-brain barrier, which restricts entry of many drugs into brain, is constituted by: A. P-glycoprotein efflux carriers in brain capillary cells B. Tight junctions between endothelial cells of brain capillaries C. Enzymes present in brain capillary walls D. All of the above

Last Answer : D. All of the above

Description : List (he Junctions performed by men and women who live in your city and village. In what ways are these similar to those performed by people who lived in Mathura? In what ways are they different? -History

Last Answer : In our city (or in our village) different types of functions such as domestic, officials, related with government posts or departments are performed by men and women as their daily routine. Mathura. ... -members but now in cities or villages people do work to meet their daily needs or expenses.

Description : Describe the Junctions of the ‘gramabhojaka’. Why do you think he was powerful? -History

Last Answer : The Functions of the Gramabhojaka. In the northern part of India, the village headman was known as the gramabhojaka. He owned a very large piece of land and got it cultivated by his slaves ... collect taxes from the village. The gramabhojaka also functioned as a judge and sometimes as a policeman.

Description : Different cell junctions found in tissues are? -Biology

Last Answer : answer:

Description : Different cell junctions found in tissues are? -Biology

Last Answer : answer:

Description : What will be the expression of three road junctions in one word ?

Last Answer : Three road junctions — Tematha.

Description : Junctions from which impluse is transmitted through one neuron to another are known as

Last Answer : Junctions from which impluse is transmitted through one neuron to another are known as

Description : Junctions from which impluse is transmitted through one neuron to another are known as

Last Answer : Junctions from which impluse is transmitted through one neuron to another are known as

Description : Read the following (A - D) stetements :- (A) Tight junctions help to stop substances from leaking across a tissue (B) Adhering junctions perform cemen

Last Answer : Read the following (A - D) stetements :- (A) Tight junctions help to stop substances from leaking across a ... correct A. Four B. Three C. Two D. One

Description : How many of the following junctions are found in epithelium tissue :-

Last Answer : How many of the following junctions are found in epithelium tissue :- A. Four B. Three C. Two D. One

Description : Cell junctions called tight , adhering and gap junctions are found in

Last Answer : Cell junctions called tight , adhering and gap junctions are found in A. Neural tissue B. Muscular tissue C. Connective tissue D. Epithelium tissue

Description : In which one of the following preparations are you likely to come across cell junctions most frequently ?

Last Answer : In which one of the following preparations are you likely to come across cell junctions ... Ciliated epithelium C. Connective tissue D. Thrombocytes

Description : Gap junctions : -

Last Answer : Gap junctions : - A. help to stop substences from leaking across a tissue . B. perform ... other by connecting the cytoplane of adjoining cells .

Description : Which of the following statement(s) is/are correct concerning cell junctions? a. The major occluding junction is the tight junction or zonula occludens b. Tight junctions are usually located near ... adjacent cells d. Gap junctions are a type of cell junction specialized for cell communication

Last Answer : Answer: a, c, d Cell junctions are classified as occluding, anchoring, and communicating. The major occluding junction is the tight junction or zonula occludens which connects ... gap junction which is specialized for communication. This junction mediates both electrical and chemical coupling

Description : Sewer manholes are generally provided at A. The change of gradient B. The change of direction C. The junctions of sewers D. All of these

Last Answer : ANS: D

Description : Drop manholes at the junctions of sewer lines, are provided if A. Invert level of a branch sewer is more than 60 cm that of the main sewer B. Sewer line runs along a main road C. Ordinary manhole cannot be built D. Two sewer lines intersect

Last Answer : ANS: A

Description : The blood - brain barrier: a. is permeable to bilirubin at birth b. is formed by the tight junctions between endothlial cells and the end feet processes of astrocytes c. is permeable to glucose d. all above

Last Answer : all above

Description : The blood - brain barrier: a. is permeable to bilirubin at birth b. is formed by the tight junctions between endothlial cells and the end feet processes of astrocytes c. is permeable to glucose d. all above

Last Answer : all above

Description : With regard to the blood retina barrier: a. the outer blood retina is formed by the retinal pigment epithelium cells and their junctions b. the blood retina barrier is typically defective in the ... fluid and anions from the extracellular space of the retina into the circulation d. all above

Last Answer : all above

Description : Select the correct statement from the ones given below with respect to Periplaneta americana. (a) Nervous system located dorsally, consists of segmentally arranged ganglia joined by a pair of longitudinal ... midgut and hindgut. (d) Grinding of food is carried out only by the mouth parts.

Last Answer : (b) Males bear a pair of short thread like anal styles.

Description : In which one of the following preparations are you likely to come across cell junctions most frequently? (a) Thrombocytes (b) Tendon (c) Hyaline cartilage (d) Ciliated epithelium

Last Answer : (d) Ciliated epithelium

Description : The cell junctions called tight, adhering and gap junctions are found in (a) connective tissue (b) epithelial tissue (c) neural tissue (d) muscular tissue

Last Answer : (b) epithelial tissue

Description : Sluice valves are fitted in a distribution system (A) Along straight length of pipes at suitable intervals (B) At the junctions of the pipes (C) At the branching off points of sub-mains (D) All the above

Last Answer : (D) All the above

Description : Air valves are generally provided in pressure pipes of water supply  (A) At pipe junctions  (B) At summits  (C) At low points  (D) Near service pipes 

Last Answer : (B) At summits 

Description : A thermoelectric engine which consists of two dissimilar electric conductors connected at two junctions maintained at different temperatures, converts (a) Electric energy into heat energy [IES-2006] (b ... energy (c) Mechanical work into electric energy (d) Electric energy into mechanical work  

Last Answer : (b) Heat energy into electric energy  

Description : What type of junctions are formed where the arms of a hybrid ring meet the main ring?

Last Answer : Basic E-type junctions.

Description : The magic-T is composed of what two basic types of T junctions?

Last Answer : E-type and H-type.

Description : What are the two basic types of T junctions?

Last Answer : E-type and H-type.