A device used to avoid the relay destroying the op-amp is A. diode B. LED C. reverse bias diode D. forward biased diode

 A device used to avoid the relay destroying the op-amp is

A. diode

B. LED

C. reverse bias diode

D. forward biased diode
by

1 Answer

Answer :

reverse bias diode
by

Related questions

Junction breakdown occurs: a) With forward bias b) With reverse bias c) Under high temperature condition d) Because of excess heating of the diode

Description : Junction breakdown occurs: a) With forward bias b) With reverse bias c) Under high temperature condition d) Because of excess heating of the diode

Last Answer : Ans: B

When using an ohmmeter to test a semiconductor diode, you find a low resistance in both the forward and reverse bias directions. This indicates that the diode has a/an ____________. A. open B. short C. good resistive quality D. good capacitive quality

Description : When using an ohmmeter to test a semiconductor diode, you find a low resistance in both the forward and reverse bias directions. This indicates that the diode has a/an ____________. A. open B. short C. good resistive quality D. good capacitive quality

Last Answer : Answer: B

Photo diode operates in the _______ condition (a) Forward bias (b) null (c) both a & d (d) reverse bias

Description : Photo diode operates in the _______ condition (a) Forward bias (b) null (c) both a & d (d) reverse bias

Last Answer : (d) reverse bias

Avalanche breakdown in a diode occurs when a. Potential barrier is reduced to zero. b. Forward current exceeds certain value. c. Reverse bias exceeds a certain value. d. None of these

Description : Avalanche breakdown in a diode occurs when a. Potential barrier is reduced to zero. b. Forward current exceeds certain value. c. Reverse bias exceeds a certain value. d. None of these

Last Answer : c. Reverse bias exceeds a certain value.

Define i)P-N junction diode ii) Depletion layer iii)Forward bias iv)Reverse bias of P-N junction diode

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Last Answer : i)P-N junction diode: It is a semiconductor device in which half of its region is P-type and other half is N-type.  ii) Depletion layer: The region where free electrons and free holes are absent ... and negative terminal is connected to p-side of p-n junction diode, it is said to be reverse bias.

The device in figure 'B' shown in the illustration will conduct when the ____________. EL-0067 A. base-emitter is forward biased and the collector-base is reverse biased B. anode-cathode is forward biased and the cathode-gate is forward biased C. source-gate is forward biased and the gate-drain is reversed biased D. terminal 1-2 is forward biased and the emitter-terminal 1 is reverse biased

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Coil of relay is connected to the A. input of op-amp B. output of op-amp C. midpoint of op-amD. anywhere in between input and ouput of op-amp

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Last Answer : output of op-amp

In a biased differential relay, the bias is defined as the ratio of

Description : In a biased differential relay, the bias is defined as the ratio of  A) Number of turns of restraining coil and operating coil B) Operating coil current and restraining coil current C) Faulteurrent and operating coil current D) Fault current and restraining coil current

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Why does a forward biased diode offer low resistance?

Description : Why does a forward biased diode offer low resistance?

Last Answer : The external voltage over comes the junction potential and provides an easy path for the flow of charges across the junction. Hence it offers low resistance.

A light emitting diode emits light only when (a) Reversed biased (b) forward biased (c) unbiased (d) none

Description : A light emitting diode emits light only when (a) Reversed biased (b) forward biased (c) unbiased (d) none

Last Answer : (b) forward biased

When the diode is forward biased, it is equivalent to a. An off switch b. An On switch c. A high resistance d. None of the above

Description : When the diode is forward biased, it is equivalent to a. An off switch b. An On switch c. A high resistance d. None of the above

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Describe the working of PN junction diode with neat sketch under forward biased condition.

Description : Describe the working of PN junction diode with neat sketch under forward biased condition.

Last Answer : If the p-region (anode) is connected to the positive terminal of the external DC source and nside (cathode) is connected to the negative terminal of the DC source then the biasing ... The large number of majority carriers crossing the junction constitutes a current called as the forward current.

When the diode is forward biased, it is equivalent to

Description : When the diode is forward biased, it is equivalent to

Last Answer : When the diode is forward biased, it is equivalent to An On switch

For normal operation of a transistor, the collector base junction is kept (a) Unbiased (b) forward biased (c) reverse biased (d) none

Description : For normal operation of a transistor, the collector base junction is kept (a) Unbiased (b) forward biased (c) reverse biased (d) none

Last Answer : (c) reverse biased

On increasing the reverse bias to a large value in a p-n junction diode current (a) Increases slowly (b) Remains fixed (c) Suddenly increases (d) Decreases slowly

Description : On increasing the reverse bias to a large value in a p-n junction diode current (a) Increases slowly (b) Remains fixed (c) Suddenly increases (d) Decreases slowly

Last Answer : (c) Suddenly increases

When a reverse bias is applied to a diode, it will a. Raise the potential barrier b. Lower the potential barrier c. Increases the majority-carrier a current greatly d. None of these

Description : When a reverse bias is applied to a diode, it will a. Raise the potential barrier b. Lower the potential barrier c. Increases the majority-carrier a current greatly d. None of these

Last Answer : a. Raise the potential barrier

Explain with neat sketch construction of PIN Diode. Draw its characteristics in reverse bias mode.

Description : Explain with neat sketch construction of PIN Diode. Draw its characteristics in reverse bias mode. 

Last Answer : Construction A PIN diode is made up of three semiconductor materials; two heavily doped P- and N- type material separated by an intrinsic (undoped) semiconductor (I) as shown in above figure ... . This advantage allows the PIN diode to process even weak signals.  Characteristics

A diode in which the change in reverse bias voltage varies the capacitance is called as

Description : A diode in which the change in reverse bias voltage varies the capacitance is called as A) Varactor diode B) Switching diode C) Tunnel diode D) Zener-diode  

Last Answer : A diode in which the change in reverse bias voltage varies the capacitance is called as Varactor diode

When reverse bias is applied to a junction diode, it

Description : When reverse bias is applied to a junction diode, it  1.increases the potential barrier 2.decreases the potential barrier 3.greatly increases the minority carrier current 4.greatly increases the majority carrier current 

Last Answer : When reverse bias is applied to a junction diode, it increases the potential barrier 

Explain the forward bias characteristics of a P-N Junction diode.

Description : Explain the forward bias characteristics of a P-N Junction diode. 

Last Answer : forward and reverse characteristics of P-N junction diode.

To turn a UJT ON, the forward bias on emitter diode should be:

Description : To turn a UJT ON, the forward bias on emitter diode should be:  1. more than the peak point voltage 2. less than the peak point voltage 3. Equal to the peak point voltage 4. Equal to the stand - off voltage  

Last Answer : To turn a UJT ON, the forward bias on emitter diode should be: more than the peak point voltage 

How much time a diode takes to switch ON in forward bias

Description : How much time a diode takes to switch ON in forward bias condition.

Last Answer : t=0 sec.

can zener diode be used in forward bias?

Last Answer : Yes it can be, and it will act like a normal PN junction diode. The characteristic of ZENER diode is exactly same as PN junction diode in forward Bias.

In the illustration, the small battery and Rb are in the circuit to apply ________. EL-0022 A. forward bias to the emitter-base B. reverse bias to the emitter-base C. a 'reference charge' on the input capacitor D. a buffer between the input ground and the emitter ground

Description : In the illustration, the small battery and Rb are in the circuit to apply ________. EL-0022 A. forward bias to the emitter-base B. reverse bias to the emitter-base C. a 'reference charge' on the input capacitor D. a buffer between the input ground and the emitter ground

Last Answer : Answer: A

In the illustration, the large battery and R(L) are in the circuit to ________. EL-0022 A. forward bias the emitter-base B. reverse bias the emitter-base C. forward bias the emitter/collector D. reverse bias the emitter/collector

Description : In the illustration, the large battery and R(L) are in the circuit to ________. EL-0022 A. forward bias the emitter-base B. reverse bias the emitter-base C. forward bias the emitter/collector D. reverse bias the emitter/collector

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Both LEDs and ILDs operate correctly with ∙ A. forward bias ∙ B. reverse bias ∙ C. neither forward nor reverse bias ∙ D. either forward or reverse bias

Description : Both LEDs and ILDs operate correctly with ∙ A. forward bias ∙ B. reverse bias ∙ C. neither forward nor reverse bias ∙ D. either forward or reverse bias

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Photodiodes operate properly with ∙ A. forward bias ∙ B. reverse bias ∙ C. neither forward nor reverse bias ∙ D. either forward or reverse bias

Description : Photodiodes operate properly with ∙ A. forward bias ∙ B. reverse bias ∙ C. neither forward nor reverse bias ∙ D. either forward or reverse bias

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Photodiodes operate property with ∙ a. Forward bias ∙ b. Reverse bias ∙ c. Neither A or B ∙ d. Either A or B

Description : Photodiodes operate property with ∙ a. Forward bias ∙ b. Reverse bias ∙ c. Neither A or B ∙ d. Either A or B

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Both LEDs and ILDs operate correctly with ∙ a. Forward bias ∙ b. Reverse bias ∙ c. Neither A or B ∙ d. Either A or B

Description : Both LEDs and ILDs operate correctly with ∙ a. Forward bias ∙ b. Reverse bias ∙ c. Neither A or B ∙ d. Either A or B

Last Answer : a. Forward bias

Depletion region of a junction is formed _________ (a) during the manufacturing process (b) under forward bias (c) under reverse bias (d) when temperature varies

Description : Depletion region of a junction is formed _________ (a) during the manufacturing process (b) under forward bias (c) under reverse bias (d) when temperature varies

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Process of conversion low voltage to high voltage is called _______ (a) Rectification (b)forward bias (c) reverse bias (d) amplification

Description : Process of conversion low voltage to high voltage is called _______ (a) Rectification (b)forward bias (c) reverse bias (d) amplification

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What is the difference between forward and reverse bias?

Description : What is the difference between forward and reverse bias?

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Actual op-amp may have an open loop gain of A. 102 B. 105 C. 103 D. 104

Description : Actual op-amp may have an open loop gain of A. 102 B. 105 C. 103 D. 104

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If current of 20 mA is passing through op-amp and voltage drop across series resistor is 10 V then value of resistance is A. 500Ω B. 400Ω C. 300Ω D. 200Ω

Description : If current of 20 mA is passing through op-amp and voltage drop across series resistor is 10 V then value of resistance is A. 500Ω B. 400Ω C. 300Ω D. 200Ω

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As long as op-amp is not saturated, the potential difference between inverting and non-inverting inputs is A. zero B. infinite C. 1 D. 2

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Number of power supplies required to get output of op-amp is A. two B. four C. six D. three

Description : Number of power supplies required to get output of op-amp is A. two B. four C. six D. three

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Impedance of ideal op-amp is A. zero B. 1 C. infinite D. 2

Description : Impedance of ideal op-amp is A. zero B. 1 C. infinite D. 2

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Output resistance of an actual op-amp is A. 45Ω B. 46Ω C. 70Ω D. 75Ω

Description : Output resistance of an actual op-amp is A. 45Ω B. 46Ω C. 70Ω D. 75Ω

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Op-amp can provide maximum output current of A. 25 mA B. 30 mA C. 35 mA D. 40 mA

Description : Op-amp can provide maximum output current of A. 25 mAB. 30 mA C. 35 mA D. 40 mA

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Why low forward power relay used in parallel to reverse power relay?

Description : Why low forward power relay used in parallel to reverse power relay?

Last Answer : A small steam leak through CIES valves will keep the machine floating on to grid at low power. So even if turbine trip, relay picks up, there is no trip actually. So low forward power relay (0.54%) used to detect the condition. 

While testing a semi-conductor diode with an ohmmeter, both the forward and reverse readings are almost in the infinity range. This would indicate that the unit is _____________. A. good B. open C. grounded D. shorted

Description : While testing a semi-conductor diode with an ohmmeter, both the forward and reverse readings are almost in the infinity range. This would indicate that the unit is _____________. A. good B. open C. grounded D. shorted

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In the wake of the Zimmerman/Martin controversy, who is sure they themselves are are not subconsciously biased? Are Flutherites ready for the Bias Test?

Description : In the wake of the Zimmerman/Martin controversy, who is sure they themselves are are not subconsciously biased? Are Flutherites ready for the Bias Test?

Last Answer : My results: Your data suggest little to no difference in implicit preference between Rick Santorum and Barack Obama. Your data suggest a moderate implicit preference for White People compared to Black People.

The width of depletion layer of a P-N junction – (1) decreases with light doping (2) increases with heavy doping (3) is independent of applied voltage (4) is increased under reverse bias

Description : The width of depletion layer of a P-N junction – (1) decreases with light doping (2) increases with heavy doping (3) is independent of applied voltage (4) is increased under reverse bias

Last Answer : (4) is increased under reverse bias Explanation: The total width of the depletion region is a function of applied reverse-bias and impurity concentration. Forward bias decreases the depletion region width whilst reverse bias increases it.

The width of depletion layer of a P-N junction (1) decreases with light doping (2) increases with heavy doping (3) is independent of applied voltage (4) is increased under reverse bias

Description : The width of depletion layer of a P-N junction (1) decreases with light doping (2) increases with heavy doping (3) is independent of applied voltage (4) is increased under reverse bias

Last Answer :  is increased under reverse bias

In the illustration, if one of the devices labeled 'TURB' should fail the ___________. EL-0003 A. device labeled 'EXC' will drive the alternator B. device labeled 'BKR' for that alternator should automatically open because of the reverse power relay C. operator must open all the devices labeled 'BKRS' to reduce the load on the remaining turbo-alternator D. emergency generator should automatically start and be placed on line to supply emergency load centers

Description : In the illustration, if one of the devices labeled 'TURB' should fail the ___________. EL-0003 A. device labeled 'EXC' will drive the alternator B. device labeled 'BKR' for that ... -alternator D. emergency generator should automatically start and be placed on line to supply emergency load centers

Last Answer : Answer: B

The purpose of the restraining coil in a biased differential relay is

Description : The purpose of the restraining coil in a biased differential relay is  (A) To reduce CT saturation during fault.  (B) To increase the sensitivity of the relay.  (C) To match the transformation ratio.  (D) To limit the spill current through the relay during heavy external fault.

Last Answer : d

Why does a reversed biased diode offer high resistance?

Description : Why does a reversed biased diode offer high resistance?

Last Answer : The charge carriers are repelled from the junction and no current flows through the junction. Thus the diode offers a high resistance.

Sketch circuit diagram of positive biased clipper using diode and explain its working.

Description : Sketch circuit diagram of positive biased clipper using diode and explain its working.

Last Answer : Positive Series Clipper with positive Vr. The following figure represents the circuit diagram for positive series clipper when the reference voltage applied is positive. During the positive cycle ... Hence the input signal that is greater than the reference voltage, appears at the output.