Power transistors with heat sink are fixed by

Power transistors with heat sink are fixed by
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Power transistors with heat sink are fixed by Fastening

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The purpose of a heat sink, as frequently used with transistors, is to ____________. A. prevent excessive temperature rise B. compensate for excessive doping C. increase the reverse current D. decrease the forward current

Description : The purpose of a heat sink, as frequently used with transistors, is to ____________. A. prevent excessive temperature rise B. compensate for excessive doping C. increase the reverse current D. decrease the forward current

Last Answer : Answer: A

Draw symbol of NPN and PNP transistors.

Description : Draw symbol of NPN and PNP transistors. 

Last Answer : symbol of NPN and PNP transistors

what are bjt transistors?

Description : what are bjt transistors?

Last Answer : Bjt transistor is a type of transistor which  uses both electrons and hole charge carrier.bjts are used as switches and amplifiers.They amplify currents.

can transistors amplify voltage?

Description : can transistors amplify voltage?

Last Answer : Yup

Heat sinks are frequently used with _____________. A. power transistors B. vacuum tubes C. tunnel rectifier diodes D. all of the above

Description : Heat sinks are frequently used with _____________. A. power transistors B. vacuum tubes C. tunnel rectifier diodes D. all of the above

Last Answer : Answer: A

Which of the following is not true? A) Transistors are much smaller B) Transistors produce low heat C) Transistors were less reliable D) Transistors were used in radios and other electronic devices

Description : Which of the following is not true? A) Transistors are much smaller B) Transistors produce low heat C) Transistors were less reliable D) Transistors were used in radios and other electronic devices

Last Answer : Answer : C

Which of the following statements comparing transistors and vacuum tubes is correct? A. Both transistors and vacuum tubes have a cathode that must be heated to give off electrons. B. A vacuum tube must have a heated cathode, where transistors do not. C. Neither transistors nor vacuum tubes require heat for electrons to flow. D. The anode of both transistors and vacuum tubes must be heated to give off electrons.

Description : Which of the following statements comparing transistors and vacuum tubes is correct? A. Both transistors and vacuum tubes have a cathode that must be heated to give off electrons. B. A vacuum tube must ... flow. D. The anode of both transistors and vacuum tubes must be heated to give off electrons.

Last Answer : Answer: B

When replacing a power transistor fitted with a heat sink in a circuit, a coating of silicone grease is applied between the transistor case and the heat sink. This is done to ____________. A. lubricate the transistor B. lubricate the heat sink C. aid in the removal of the heat sink D. provide maximum heat transfer

Description : When replacing a power transistor fitted with a heat sink in a circuit, a coating of silicone grease is applied between the transistor case and the heat sink. This is done to ____________. A. lubricate ... the heat sink C. aid in the removal of the heat sink D. provide maximum heat transfer

Last Answer : Answer: D

An important characteristic of the device shown in figure 'B' of the illustration as compared with conventional NPN or PNP transistors is its ____________. EL-0065 A. higher temperature sensitivity B. higher power ratings C. very high input resistance D. all of the above

Description : An important characteristic of the device shown in figure 'B' of the illustration as compared with conventional NPN or PNP transistors is its ____________. EL-0065 A. higher temperature sensitivity B. higher power ratings C. very high input resistance D. all of the above

Last Answer : Answer: C

Current limited power supplies can prevent damage to A) Rectifier diodes and power transformers. B) Pass transistors C) Other circuits in the system D) All of the above.

Description : Current limited power supplies can prevent damage to A) Rectifier diodes and power transformers. B) Pass transistors C) Other circuits in the system D) All of the above.

Last Answer : D) All of the above.

In digital ICs, Schottky transistors are preferred over normal transistors because of their (A) Lower Propagation delay. (B) Higher Propagation delay. (C) Lower Power dissipation. (D) Higher Power dissipation.

Description : In digital ICs, Schottky transistors are preferred over normal transistors because of their (A) Lower Propagation delay. (B) Higher Propagation delay. (C) Lower Power dissipation. (D) Higher Power dissipation.

Last Answer : Ans: A Lower propagation delay as shottky transistors reduce the storage time delay by preventing the transistor from going deep into saturation.

Which of the following actions can be carried out in order to prevent thermal runaway in a transistor? A. Increase the current through the collector-base junction. B. Install a heat sink. C. Shift the 'Q' point to increase collector current. D. Increase the potential difference between the emitter and the base.

Description : Which of the following actions can be carried out in order to prevent thermal runaway in a transistor? A. Increase the current through the collector-base junction. B. Install a heat sink. ... point to increase collector current. D. Increase the potential difference between the emitter and the base.

Last Answer : Answer: B

When a solid-state component of an electronic circuit is mounted to a metallic mass, the general purpose of that mass is to ____________. A. prevent vibration damage to delicate components B. prevent mechanical damage to solid-state components C. dissipate stray magnetic currents D. act as a heat sink

Description : When a solid-state component of an electronic circuit is mounted to a metallic mass, the general purpose of that mass is to ____________. A. prevent vibration damage to delicate components B. prevent ... damage to solid-state components C. dissipate stray magnetic currents D. act as a heat sink

Last Answer : Answer: D

Is a thermodynamic system that operates continuously with only energy (heat and work) crossing its boundaries?  a. Heat Engine  b. Heat Reservoir  c. Heat Source  d. Heat Sink

Description : Is a thermodynamic system that operates continuously with only energy (heat and work) crossing its boundaries?  a. Heat Engine  b. Heat Reservoir  c. Heat Source  d. Heat Sink

Last Answer : Heat Engine

The low temperature reservoir of the heat reservoirs is known as ______.  A. Source reservoir  B. Heel reservoir  C. Toe reservoir  D. Sink reservoir

Description : The low temperature reservoir of the heat reservoirs is known as ______.  A. Source reservoir  B. Heel reservoir  C. Toe reservoir  D. Sink reservoir

Last Answer : Sink reservoir

What is the ideal efficiency of a reversible heat engine cyclically operating between a source temperature of 600 degrees Kelvin and a sink temperature of 150 degrees Kelvin?

Description : What is the ideal efficiency of a reversible heat engine cyclically operating between a source temperature of 600 degrees Kelvin and a sink temperature of 150 degrees Kelvin?

Last Answer : ANSWER: 75 PERCENT

use of heat sink.

Description : use of heat sink.

Last Answer : Uses of heat sink: i. It is used to avoid thermal runaway in electronic circuits. ii. Use to transfer heat generated by a mechanical or an electronic device to the surroundings. iii. Use ... the contact surface between heat sink and air. iv. Used to dissipate the amount of heat generated.

what is heat sink ?

Description : what is heat sink ?

Last Answer : Heat sink transfer the heat from any chip or any electronics equipment to the surrounding (generally it air). Heat sink reduce heat on equipment. It may be use with LED or any equipment which generating heat . Heat reduces efficiency in most of the cases so we use heat sink.

Can we make sub-atomic transistors in the future?

Description : Can we make sub-atomic transistors in the future?

Last Answer : I don’t think it’s possible because all transistors operate with elections passing through them. So electron size is likely the limiting factor. Electrons may be too large to function adequately.

Can we have sub atomic transistors (details inside)

Description : Can we have sub atomic transistors (details inside)

Last Answer : What do you mean can we “have” them? Do they exist? The testing indicates that they probably do.

How do I find the specs for transistors in order to replace them?

Description : How do I find the specs for transistors in order to replace them?

Last Answer : Find the Transisitor’s P/N and go to a list like THIS

How could I do this with transistors?

Description : How could I do this with transistors?

Last Answer : answer:Possibly this website diagramming relays would help you? Otherwise, instructables is often used by homeschoolers for this type of thing. Good luck!

Why are transistors better than triads ?

Description : Why are transistors better than triads ?

Last Answer : Both triodes and transistors act as amplifiers. But due to the large size of the triode valve, there is a problem in installing it in the electronic device. This requires more energy ... and cooling system. But transistors do not have these problems. So transistors are better than triodes.

What three advantages do transistors have over valves?

Description : What three advantages do transistors have over valves?

Last Answer : Need answer

How many transistors can you find in a CPU today?

Description : How many transistors can you find in a CPU today?

Last Answer : on the order of a billion

How big are transistors?

Description : How big are transistors?

Last Answer : Need answer

What are three advantages that transistors have over valves?

Description : What are three advantages that transistors have over valves?

Last Answer : 6u76yu

When was the transistors invented? A) 1948 B) 1938 C) 1958 D) 1968

Description : When was the transistors invented? A) 1948 B) 1938 C) 1958 D) 1968

Last Answer : Answer : A

Find out who is not the inventor of transistors among following names A) John Burdeen B) William Shockley C) Walter Brattain D) Lee de Forest

Description : Find out who is not the inventor of transistors among following names A) John Burdeen B) William Shockley C) Walter Brattain D) Lee de Forest

Last Answer : Answer : D

Which electronic component was made out of semiconductor material? A) Vacuum tubes B) Transistors C) ICs D) All of above

Description : Which electronic component was made out of semiconductor material? A) Vacuum tubes B) Transistors C) ICs D) All of above

Last Answer : Answer : C

The main electronic component used in first generation computers was A) Transistors B) Vacuum Tubes and Valves C) Integrated Circuits D) None of above

Description : The main electronic component used in first generation computers was A) Transistors B) Vacuum Tubes and Valves C) Integrated Circuits D) None of above

Last Answer : Answer : B

Chief component of first generation computer was A) Transistors B) Vacuum Tubes and Valves C) Integrated Circuits D) None of above

Description : Chief component of first generation computer was A) Transistors B) Vacuum Tubes and Valves C) Integrated Circuits D) None of above

Last Answer : Answer : B

Silicon is used in which of the following? (1) Semiconductors (2) solar energy devices (3) transistors (4) All of these

Description : Silicon is used in which of the following? (1) Semiconductors (2) solar energy devices (3) transistors (4) All of these

Last Answer : (4) All of these Explanation: Silicon is a chemical element (its symbol in chemical formula expressions is "Si") that is present in sand and glass and which is the best known semiconductor material in electronic components. Its atomic number is 14.

The transistors in the illustrated circuit are connected using what type of coupling? EL-0049 A. RC coupling B. transformer coupling C. LC coupling D. direct coupling

Description : The transistors in the illustrated circuit are connected using what type of coupling? EL-0049 A. RC coupling B. transformer coupling C. LC coupling D. direct coupling

Last Answer : Answer: B

The transistors in the illustrated circuit are connected using what type of coupling? EL-0048 A. RC coupling B. transformer coupling C. LC coupling D. direct coupling

Description : The transistors in the illustrated circuit are connected using what type of coupling? EL-0048 A. RC coupling B. transformer coupling C. LC coupling D. direct coupling

Last Answer : Answer: A

The transistors in the illustrated circuit are connected using what type of coupling? EL-0051 A. RC coupling B. transformer coupling C. impedance coupling D. direct coupling

Description : The transistors in the illustrated circuit are connected using what type of coupling? EL-0051 A. RC coupling B. transformer coupling C. impedance coupling D. direct coupling

Last Answer : Answer: D

The transistors in the illustrated circuit are connected using what type of coupling? EL-0050 A. RC coupling B. transformer coupling C. Impedance coupling D. direct coupling

Description : The transistors in the illustrated circuit are connected using what type of coupling? EL-0050 A. RC coupling B. transformer coupling C. Impedance coupling D. direct coupling

Last Answer : Answer: C

Which of the devices listed is indicated by the symbols lettered 'A' to 'F', shown in the illustration? EL-0016 A. Diodes B. Linear inductors C. Capacitors D. Transistors

Description : Which of the devices listed is indicated by the symbols lettered 'A' to 'F', shown in the illustration? EL-0016 A. Diodes B. Linear inductors C. Capacitors D. Transistors

Last Answer : Answer: A

Normally, the FIRST step in troubleshooting a transistor circuit card is to _____________. A. carefully remove the transistors from the card B. give the circuit an initial test with a signal generator C. test for continuity with a low voltage DC supply D. visually inspect the card

Description : Normally, the FIRST step in troubleshooting a transistor circuit card is to _____________. A. carefully remove the transistors from the card B. give the circuit an initial test with a signal generator C. test for continuity with a low voltage DC supply D. visually inspect the card

Last Answer : Answer: D

A solid-state circuit is inoperative; the FIRST action that should be taken is to ____________. A. wiggle all the components to check for loose connections B. check all the resistors C. change all transistors D. check the DC supply voltage

Description : A solid-state circuit is inoperative; the FIRST action that should be taken is to ____________. A. wiggle all the components to check for loose connections B. check all the resistors C. change all transistors D. check the DC supply voltage

Last Answer : Answer: D

A triac thyristor functions as a control device and is basically ________________. A. two NPN transistors in parallel with a common base lead B. a diode in series with a temperature sensitive capacitor C. two back-to-back SCR's with a common gate lead D. a triode tube with an extra heavy grid element

Description : A triac thyristor functions as a control device and is basically ________________. A. two NPN transistors in parallel with a common base lead B. a diode in series with a temperature sensitive capacitor C. two ... -back SCR's with a common gate lead D. a triode tube with an extra heavy grid element

Last Answer : Answer: C

Which of the following statements correctly applies to transistors? A. NDN and PNP are the two basic types of transistors. B. The three terminals are called the emitter, base, and collector. C. The emitter separates the base and collector. D. The collector separates the emitter and base.

Description : Which of the following statements correctly applies to transistors? A. NDN and PNP are the two basic types of transistors. B. The three terminals are called the emitter, base, and collector. C. The emitter separates the base and collector. D. The collector separates the emitter and base.

Last Answer : Answer: B

Which of the following low noise transistors is commonly used at microwave frequencies? A. MOSFET B. GASFET C. MESFET D. JFET

Description : Which of the following low noise transistors is commonly used at microwave frequencies? A. MOSFET B. GASFET C. MESFET D. JFET

Last Answer : C. MESFET

Vacuum tubes have been replaced by-----? A. Conductors B. Diodes C. Transistors (Answer) D. None of these

Description : Vacuum tubes have been replaced by-----? A. Conductors B. Diodes C. Transistors (Answer) D. None of these

Last Answer : C. Transistors (Answer)

Chief component of first generation computer was a. Transistors b. Vacuum Tubes and Valves c. Integrated Circuits d. None of above

Description : Chief component of first generation computer was a. Transistors b. Vacuum Tubes and Valves c. Integrated Circuits d. None of above

Last Answer : Vacuum Tubes and Valves

Which one of the following is NOT an industrial product ? 1. oil to be refined into fuel for homes 2. transistors used as components for portable radios 3. paper, pens and glue used in bank branch offices 4. a marketing consultant who prepares marketing plants for clients 5. computer software to help people complete personal tax forms

Description : Which one of the following is NOT an industrial product ? 1. oil to be refined into fuel for homes 2. transistors used as components for portable radios 3. paper, pens and glue ... who prepares marketing plants for clients 5. computer software to help people complete personal tax forms

Last Answer : computer software to help people complete personal tax forms

A complete electronic circuit with transistors and other electronic components on a small silicon chip is called a(n) a) workstation b) CPU c) magnetic disk d) integrated circuit e) None of these

Description : A complete electronic circuit with transistors and other electronic components on a small silicon chip is called a(n) a) workstation b) CPU c) magnetic disk d) integrated circuit e) None of these

Last Answer : d) integrated circuit

First generation computer systems used 1) Transistors 2) Vacuum tubes 3) Magnetic cores 4) Silicon chips

Description : First generation computer systems used 1) Transistors 2) Vacuum tubes 3) Magnetic cores 4) Silicon chips

Last Answer : 2) Vacuum tubes

Transistors are associated with which computer system? 1) First generation 2) Fifth generation 3) Second generation 4) None of these

Description : Transistors are associated with which computer system? 1) First generation 2) Fifth generation 3) Second generation 4) None of these

Last Answer : 3) Second generation