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Which of the following is the correct match based on the application of diodes? (considering general trends) (a) Zener diode -- Reverse biased (b) Photodiode - Forward biased (c) Half wave Rectifier - Both Forward and reversed biased
For transistor action (a) Base, emitter, and collector regions should have similar size and doping concentrations. (b) The base region must be very thin and lightly doped. (c) The emitter-base junction is forward biased and the base-collector junction is reverse biased. (d) Both the emitter-base junction as well as the base-collector junction are forward biased. Which one of the following pairs of statements is correct?
Consider the following statements regarding Thyristor: 1. It conducts when forward biased and positive current flows through the gate 2. It conducts when forward biased and negative current flows through the gate 3. It commutates when reverse biased and negative current flows through the gate 4. It commutates when the gate current is withdrawn Which of these statement(s) is/are correct?
In a single-phase half-wave circuit with RL load and a freewheeling diode, the load voltage during the freewheeling period will be
In a single-phase half-wave circuit with RL load and a freewheeling diode, the freewheeling period is
Consider the following statements regarding an N-P-N Bipolar Junction Transistor: 1. Emitter diode is forward biased and the collector diode is reverse biased 2. Emitter has many free electrons 3. Free electrons are injected into the base and pass through the collector 4. Depletion layers around junction J1 and J2 of BJT are widened. Which of the above statements are correct?
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 :
A diode circuit is so arranged that when the switch is open it’s KVL gives Ri+ 1/C ∫i dt = 0 When the switch is closed, Ri+ 1/C ∫i dt = Vs Vs is the dc supply voltage. The diode is so connected that it is forward biased when switch is closed The circuit is mostly likely be a
A semi-converter with RLE load and a freewheeling diode has discontinuous load current with firing angle α and extinction angle β. The freewheeling period is
The output of the following Python code is similar to the alphabet . . . . . . . .
import turtlet=turtle.Pen()t1=turtle.Pen()t2=turtle.Pen()t.forward(100)t1.forward(100)t2.forward(100)t1.left(90)t1.forward(75)t2.right(90)t2.forward(75)