Consider the following statements regarding JFET: 1. The relationship between the drain current and gate-to-source voltage of a JFET is a nonlinear. 2. The minimum current for JFET occurs at pinch-off voltage defined by VGS = VP. 3. A current controlled device is one in which a current defines the operating conditions of the device. Which of the above statements are correct?

LohaHridoy
  1. 1 and 2 only
  2. 1 and 3 only
  3. 1, 2 and 3
  4. 2 and 3 only

0 like 0 dislike
1 views
Share with your friends

1 Answers

AhmedNazir

Call

Option 1 : 1 and 2 only

The relationship between the drain current and gate-to-source voltage defines as:

ID=IDSS(1-(VGS / Vp)2

where,

ID=drain current, IDSS=maximum saturation current, VGS=gate to source voltage, Vp=pinch of voltage

drain current, and gate-to-source voltage in JFET are nonlinearly related(option 1 is correct)

In the JFET transistor at VGS=Vp drain current is zero which is the minimum drain current . (option 2 is correct)

current control devices are the device in which input current control output current or voltage, in BJT transistor base current control collector and emitter current and BJT are known as a current control device.(option 3 incorrect)

 

The FET transistors are voltage-controlled devices whereas the BJT transistors are current-controlled devices. The FET transistors have three terminal drains, source, and gate which are equivalent to the collector, emitter, and base terminals in BJT transistors.

0 like 0 dislike
1 views
Talk Doctor Online in Bissoy App
Which of the following voltage controlled device has three terminals (Gate, Source and Drain)?

Option 3 : Power MOSFETMOSFET: A Metal Oxide Semiconductor Field Effect Transistor (MOSFET) has 4 terminals Gate, Drain, Source and Substrate (Body) terminal. But in many practical circuits MOSFET is used...

1 Answers 1 views
In comparing the operation of the half-controlled 2-pulse circuit with that of the fully-controlled circuit, which of the following statements are evident 1. Since half the thyristors are replaced by diodes, a half-controlled converter costs less than a fully-controlled converter. 2. Due to the freewheeling action with a half-controlled bridge-circuit power factor is improved in half-controlled converters. 3. The AC supply current is more distorted due to its zero periods with the half-controlled circuit, compared to a fully-controlled bridge circuit. Select the correct answer using the code given below :?

Option 1 : 1 and 2 onlyDifference Between Half Wave and Full Wave Rectifier: PARAMETERS HALF-WAVE RECTIFIERS FULL-WAVE RECTIFIERS Rectification Efficiency 40.60% 81.20% Ripple Factor 1.21 0.482 Transformer Utilization Factor 0.286 0.692 Voltage Regulation Good Better The fundamental frequency of the ripple Equal to Supply Frequency, f Double...

1 Answers 1 views
Consider the following statements with regards to IGBTs : 1. At the highest temperature, maximum current rating goes down to 2/3 value. 2. IGBT is the preferred device for applications that require high blocking voltages and lower operating frequencies. 3. Turn-on transients are identical to MOSFETs. Which of the above statements are correct ?

Option 3 : 1 and 3 onlyIGBT (Insulated Gate Bipolar Transistor): It is a three-terminal power switch having high input impedance like PMOSFET and low on-state power loss as in BJT...

1 Answers 1 views
Five boxes B1, B2, B3, B4 and B5 are placed one above the other in racks. The lowermost rack is numbered as one and just above the lowermost is numbered as two and so on. Each box is coloured with different colour such as L1, L2, L3, L4 and L5 (not necessarily in the same order). Two boxes are placed between L2 coloured box and L5 coloured box. Box B1 is not placed immediately above box B3. Box B4 is placed in the top most rack. L1 coloured box is placed immediate above L5 coloured box. Box B3 is coloured with L4. L5 coloured box is placed above L4 coloured box. Box B2 is coloured with L1. Which of the following boxes are placed immediately above and immediately below B5 box respectively?

Option 3 : B2 and B3Five boxes: B1, B2, B3, B4 and B5. Five colour: L1, L2, L3, L4 and L5. 1) Box B4 is placed in the top most rack. 2) Two boxes...

1 Answers 32 views
Consider the following statements regarding the OSI model: 1. Application layer provides the control structure for communication between applications; establishes, manages and terminates connections between cooperating applications. 2. Data link layer provides for the reliable transfer of information across the physical link. 3. Transport layer provides end-to-end error recovery and flow control of data. Which of the above statements are correct?

Option 4 : 2 and 3 onlyThe correct answer is option 4.  Statement 1: Application layer provides the control structure for communication between applications; establishes, manages, and terminates connections between cooperating applications. False,...

1 Answers 3 views
Consider the following statements regarding duality: 1. The dual networks are obtained for both AC and DC circuits and they are based on Kirchhoff's laws. 2. Dual circuits are not obtained in planar networks. 3. Two networks are said to be dual networks if mesh equations of one network have the same form as the nodal equations of the other. 4. Which of the above statements are correct. Which of the above statements are correct?

Option 2 : 1 and 3 only→ Dual network's are obtained for both AC & DC circuits satisfying kirchoff's law's i.e. KCL & KVL. → Dual networks are obtained in planar...

1 Answers 1 views
Consider the following statements regarding 555 timer: 1. It operates on -5 V to +18 V supply voltage in both free running and one-shot modes. 2. It has a high current output and it can source or sink 500 mA. 3. The output can drive TTL and has a temperature stability of 80 parts per million (ppm) per degree celsius change in temperature or equivalently 0.008 %/°C. Which of the above statements are not correct?

Option 1 : 1 and 2 onlySolution: 555 Timer IC: The 555 timer chip is extremely robust and stable 8-pin device. It can be operated either as a very accurate Monostable, Bistable or...

1 Answers 1 views
Consider the following statements regarding Muscle Tissue: 1. Each muscle is made of numerous fine fibrils, called myofibrils. 2. Smooth muscles are voluntary as their functioning can be directly controlled. 3. Cardiac muscle tissue is a contractile tissue present only in the heart. Which of the statements given above is/are correct?

Option 3 : 1 and 3 only Each muscle is made of many long, cylindrical fibres arranged in parallel arrays. These fibres are composed of numerous fine fibrils, called myofibrils. Hence statement 1...

1 Answers 1 views
Consider the following statements about 'National Youth Policy'. a. The First National Youth policy was adopted in 1986. b. In the 2003 policy, 'Youth' was defined as a person of age between 15-35. c. In the 2014 policy, the youth age-group is defined as 15-29 years. Which of the statements given above is/are correct?

Option 4 : Only cThe Correct answer is the Only c. The National Youth Policy was formulated in the year 1988, in 2003, and subsequently in 2014. The changes in the socio-economic and...

1 Answers 1 views
Availability of drinking water is continuously decreasing. The government decided to identify those sources of drinking water which getting polluted. The following table depicts the number of polluted sources in a district. Source of drinking water getting polluted Number Wells 24 Handpump 12 Dam 12 Borewell 6 Ponds 18 The pictograph table for the above table will be (A) Source of drinking water getting polluted Number symbol = 6 source Wells Handpump Dam Borewell Ponds (B) Source of drinking water getting polluted Number symbol  = 6 source Wells Handpump Dam Borewell Ponds (C) Source of drinking water getting polluted Number symbol  = 6 source Wells Handpump Dam Borewell Ponds (D) Source of drinking water getting polluted Number symbol  = 6 source Wells Handpump Dam Borewell Ponds?

Option 2 : BGiven: Symbol  = 6 sources Concept used: Pictograph: A pictograph is a graph that shows numerical information by using picture symbols or icons to represent data sets Calculation: Source of drinking water getting polluted Number Wells 24 Handpump 12 Dam 12 Borewell 6 Ponds 18 The number...

1 Answers 1 views
X