55051. The parameter β of a BJT change by 300%. If self bias is used in the amplifier using this BJT, the quiescent value of IC and VCE remain almost the same.
55052. A bypass capacitor produces
55053. Rise time in a transistor is change from
55054. The common gate amplifier has a characteristically __________ input resistance and a __________ output resistance.
55055. For input and later stages, BI-FET op-amp use
55056. The emitter coupled pair of BJT's gives a linear transfer relation between the differential output voltage and the differential input voltage Vid only when the magnitude of Vid is less a times the thermal voltage, where a is
55057. In most transistor the collector region is made physically larger than the emitter region
55058. The leakage current in CB configuration may be around
55059. In figure VCC = + 30 V, IC corresponding to Q point is 1 mA. If RC = 5 kΩ and RE = 5 kΩ, VCE corresponding to Q point is
55060. I met J.K.Rowling--------------they say is the richest person in the worl(Relative clause)
55061. In which of the following circuits is op-amp used in open loop configuration?
55062. The student leader explained why he had to leave the panel discussion forum(Adverbial of’anger’)
55063. In a diode rectifier with a capacitance input filter, a surge current is likely to flow when the circuit is switched on. The cause of this surge current is
55064. In a CE amplifier it is desired that the signal should be able to swing equally in both directions. Then the Q point should be
55065. In a base driver amplifier the voltage gain is the ratio of
55066. Assertion (A): A class C amplifier is a timed amplifier which needs a tank circuit as the load in the collector circuit of the transistor for its proper operationReason (R): In class C operation collector current flows for less than 180° of the ac cycle and thus flows in pulses
55067. A junction Field Effect Transistor can operate in
55068. The re model equivalent circuit shown in figure is for
55069. CMRR is the ratio of differential voltage gain to common mode gain.
55070. The purpose of impedance matching in an amplifier circuit is to achieve
55071. For the circuit of figure the input and output Miller resistances are
55072. In a BJT CE amplifier circuit the value of coupling capacitor should be such that
55073. In order to rectify sinusoidal signals of millivolt range (< 0.6 V)
55074. CMRR of an op-amp is about 0.1.
55075. A transistor amplifier has poles at
s1 = - 0.000245 x 109 rad/sec.
s2 = - 0.0748 x 109 rad/sec.
s3 = - 0.670 x 109 rad/sec.
s4 = - 4.38 x 109 rad/sec.
The upper 3 dB frequency of the amplifier will be
55076. In the circuit of figure for sinusoidal input the waveform of the output will be as shown in
55077. An engineer designs an amplifier to have a voltage gain of 60, but when constructed it only had a gain of 50. What value of feedback will double the gain?
55078. The maximum theoretical efficiency for class A amplifier is
55079. In the case of an amplifier, the normalised voltage gain is given by.
where f0 is zero frequency, fP is pole frequency. For a standard frequency response of the amplifier,
55080. In a rectifier only a portion of input power is converted into DC power. The rest is AC power.
55081. The slope of the transfer characteristics of an N-channel JFET is
55082. She-------------tomorrow to attend the wedding (Modal verb)
55083. In a current mirror
55084. In a JFET, gates are always
55085. By connecting external resistances to a differential amplifier we can adjust
55086. In a CC circuit the current gain is
55087. A feedback network to be used with an amplifier to provide oscillation is tested and found to give an output of 0.124 V with a 0.5 V input. What must be the minimum gain of the oscillator to provide oscillations?
55088. For the circuit shown in figure low cut-off frequency is
55089. In a CE amplifier the Q point is very close to saturation point on the dc load line. This results in
55090. Class-B amplifier has less efficiency compared to
55091. In the amplifier circuit figure the quiescent point voltage and current are
55092. Calculate the O/P voltage of a non-inverting constant gain multiplier with R1 = 100 kΩ, Rf= 600 kΩ, V1 = 2 volt, then O/P voltage Vo of non inverting op-amp is given by
55093. Normal blood pressure in man?
55094. The noise figure of FET circuit is
55095. The circuit diagram shown in the figure consists of transistors in;
55096. The encapsulation of transistor is necessary for
55097. I have never met Osama bin Laden-------------do I want to(Neg.conjunction)
55098. In CE approximately, the active region is where the collector curves are
55099. In a transistor leakage current mainly depends on
55100. In a CB amplifier the maximum efficiency could be