Description : A negative damper with negative bias clamps the most positive extremity of the output wave shape to what polarity (positive or negative)?
Last Answer : Negative potential.
Description : To which polarity does a positive damper with positive bins clamp the most negative extremity of the output waveform (positive or negative)?
Last Answer : Positive potential.
Description : A positive damper clamps which extremity of the output signal to 0 volts?
Last Answer : Most negative.
Description : What type of bias (positive or negative) is added to a negative damper for the most positive extremity of the wave shape to be clamped above 0 volts?
Last Answer : Positive bias.
Description : A negative damper damps which extremity of the output waveshape to 0 volts?
Last Answer : Most positive.
Description : What would be the output of a negative clamper with a bias potential of −5 volts and an input voltage swing from +50 to −50 volts?
Last Answer : -5 volts.
Description : Why does using ac vice dc bias voltage result in a stronger output signal?
Last Answer : Because an ac bias voltage of the proper frequency and level places the input signal away from both steps in the magnetism curve. The result is two undistorted output signals that are combined into one strong output.
Description : How does dc bias added to the input signal correct the distortion in the output signal?
Last Answer : The dc bias moves the input signal away from the step in the magnetism curve. This prevents the input signal from crossing the zero-point of the magnetism curve.
Description : What is the relative length of the discharge time constant with respect to the charge time constant of a damper (long or short)?
Last Answer : Long time constant.
Description : What is the relative length of the time constant for the diode capacitor combination in a damper (long or short)?
Last Answer : Short time constant.
Description : How should a tape recorder with good phase response reproduce a complex waveform, such as a square wave?
Last Answer : With no distortion
Description : What waveform is the basis of all complex waveforms?
Last Answer : The sine wave.
Description : A flue damper and a vent damper are two examples of _______ a. Combustion air positive shut off devices b. Combustion air negative shut off devices c. Both a. & b. d. None of the above
Last Answer : a. Combustion air positive shut off devices
Description : What type of bias is used where only moderate changes in ambient temperature are expected?
Last Answer : Self-bias.
Description : What type of bias is required for proper operation of a photodiode?
Last Answer : Reverse bias.
Description : What type of bias is required to cause an LED to produce light?
Last Answer : Forward bias.
Description : What type of bias makes a diode act as a closed switch?
Description : What type of bias opposes the PN junction barrier?
Last Answer : Forward.
Description : What type of bias requires constant current flow through the cathode
Last Answer : Cathode biasing.
Description : Describe working of negative clamper circuit with neat diagram and waveform.
Last Answer : Working: In the first positive half cycle the capacitor will charge through the forward biased diode to peak voltage Vm as shown in circuit. Charging takes place very quickly as the ... reverse biased and stop conducting. Negative clamper adds a negative DC shift as shown in waveform.
Description : The output waveform produced due to time base generator in a CRO is a) saw tooth b) sinusoidal c) linear d) helical
Last Answer : a) saw tooth
Description : Define filter. State its types. Draw any one filter with input and output waveform.
Last Answer : Defination : Filter is a circuit which remove or filtered out the AC component (ripple) Types of filter 1. Shunt Capacitor filter (C filter) 2. Series Inductor filter (L filter) 3. LC filter 4. filter (CLC filter) Shunt Capacitor filter (C filter) OR Waveforms:
Description : State the condition for RC differentiator. Draw the output waveform of RC integrator for square wave input.
Last Answer : Condition for RC differentiator: If the time duration T of the input waveform is comparable with the RC time constant (product of R and C) then the output waveform of the differentiator gets distorted. Hence for proper differentiator the condition is as follows: T >>RC
Description : Draw the circuit diagram of shunt capacitor filter along with full wave rectifier. Draw the waveform of full wave rectifier output and shunt capacitor filter output.
Last Answer : Fig: Shunt capacitor filter along with full wave rectifier Fig: Waveform of full wave rectifier output and shunt capacitor filter output.
Description : Draw the circuit diagram of bridge rectifier with π filter. Draw its input and output waveform.
Last Answer : Circuit diagram of bridge rectifier with π filter : Input and output waveform:
Description : Explain full wave bridged rectifier with the help of circuit diagram and input output waveform.
Last Answer : 1. In positive half cycle (0 to Π): The end A of the secondary winding becomes positive and end B negative. This makes diode D1 and D4 forward biased while diode D2 and D3 are reverse biased. These two diodes will ... D2 and D3 when it is conducting is as follows. B - D2 - RL - D3 - A
Description : The output waveform of a 555 Timer is: (1) Sinusoidal (2) Triangular (3) Rectangular (4) Elliptical
Last Answer : The output waveform of a 555 Timer is: Rectangular
Description : The output voltage waveform of a three-phase square-wave inverter contains (A) only even harmonics (B) both odd and even harmonic (C) only odd harmonics (D) only triple harmonics
Last Answer : C
Description : To properly bias an NPN transistor, what polarity voltage is applied to the collector, and what is its relationship to the base voltage?
Last Answer : Positive, more positive.
Description : What is the most widely used combination-bias system?
Last Answer : The voltage-divider type.
Description : Applying a reverse bias to the gate of an FET has what effect?
Last Answer : Source-to-drain resistance increases.
Description : When the reverse bias on a varactor is increased, what happens to the effective capacitance?
Last Answer : Capacitance decreases.
Description : Which breakdown theory explains the action that takes place in a heavily doped PN-junction with a reverse bias of less than 5 volts?
Last Answer : Zener effect.
Description : What is used to bias a magnetic amplifier so that the control winding remains free to accept control (input) signals?
Last Answer : A bias winding and associated circuitry.
Description : A, when there is an increase in the input voltage, the forward bias of Q1 increases/decreases (which one).
Last Answer : Increases.
Description : In order to reverse bias in a PN junction, what terminal of a battery is connected to the P material?
Last Answer : Negative.
Description : What causes dc bias energy to be absorbed by avalanche electrons and given up to the microwave field applied to an avalanche transit-time diode?
Last Answer : The negative-resistance property.
Description : What are three advantages of adding an ac bias voltage to the input signal instead of adding a fixed dc bias voltage?
Last Answer : a. Reproduces a stronger output signal. b. Greatly improves the SNR. c. Greatly reduces the natural tape hiss.
Description : Why does adding dc vice ac bias voltage to the input signal result in a poor signal-to-noise ratio (SNR)?
Last Answer : With dc bias, the SNR is poor because only a small portion of the magnetism curve is straight enough to use, thus the output signal is weak compared with the natural tape hiss.
Description : If a voltage (positive or negative) is measured on the "1" output of a flip-flop, what state is it in?
Last Answer : SET state.
Description : Which portion of a sine-wave input is retained in the output of a series-negative limiter?
Last Answer : Positive.
Description : What will be the output of Q if J is HIGH, PS and CLR are HIGH, and the clock is going negative?
Last Answer : Set, or HIGH (1).
Description : Why can't they make muffler clamps which are as strong as wire clothes hangers?
Last Answer : I am sure they can. Your speculation concerning why they don’t makes sense to me.
Description : Have you ever swallowed wrong, like just as you're taking a breath, and you suddenly start choking and your esophogus seizes up, clamps shut, so you can't breath at all and you really think you're going to die?
Last Answer : This happened to my brother once and he fell ass over teakettle. When he momentarily passed out, his muscles relaxed and he could breathe again. There is medicine available to treat the condition.
Description : Where I can find the best Quality Metal plastic clamps?
Last Answer : DKHardware made glass clamps are made of solid and sturdy metals that come with durable life. DKHardware have 200 product options in this product. You should visit DKHardware if you want best.
Description : When changing fuses and the spring clips are found to have lost their grip, they should be replaced or _____________. A. tightened firmly with insulated pliers B. clip clamps should be used C. wired closed with uninsulated, varnished copper wire D. carefully bent back to their original shapes
Last Answer : Answer: B
Description : When providing care to the patient with bilateral nephrostomy tubes, the nurse never does which of the following? a) Clamps each nephrostomy tube when the patient is moved The nurse must never clamp a ... saline q8h as ordered The nurse may irrigate a nephrostomy tube with specific orders to do so.
Last Answer : a) Clamps each nephrostomy tube when the patient is moved The nurse must never clamp a nephrostomy tube because it could cause obstruction and resultant pyelonephritis.
Description : Till USFD testing of new AT weld what is criteria for joggling ? (i) Joggling with two far end bold (ii) Joggling with two tight clamps* (iii) Leave without joggling till its testing (iv) None of the above
Last Answer : (ii) Joggling with two tight clamps*
Description : Historically, Knox PLC sold industrial clamps directly to firms using these items in their production process. Knox's Chairman believes that it may be time to start using an industrial distributor because ... D)carry a more complete line of Knox clamps. E)market the products to Knox specifications.
Last Answer : A)provide Knox with market information.
Description : A stone weighing 20 N is whirling in a vertical circle at the extremity of a string 100 cm long. The tension in the string will be zero a.at the highest position b.at the lowest position c.at the midway position d.at none of the above e.107 dynes
Last Answer : a. at the highest position