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See all →- A full wave rectifier circuit with diodes (D_1) and (D_2) is shown in the figure. If input supply voltage V_in = 220(100π t) volt, then at t = 15 msec Answer: 1. D₁ is forward biased, D₂ is reverse biased or 2. D₁ is reverse biased, D₂ is forward biased Key idea: in a centre-tapped full-wav... 1
- The output (Y) of the given logic implementation is similar to the output of an/a ________ gate. Answer: 4. NOR Key idea: write the output of each gate in Boolean form and simplify. The upper gate is a NOR gate with inputs A and B: A+B .... 1
- A logic circuit provides the output Y as per the following truth table :| A | B | Y ||---|---|---|| 0 | 0 | 1 || 0 | 1 | 0 || 1 | 0 | 1 || 1 | 1 | 0 |The expression for the output Y is : Answer: 4. B Key idea: Read the truth table to see what Y depends on. Y is 1 when B=0 and 0 when B=1 , whatever A is (rows 1 and 3, and rows... 1
- Consider the following statements A and B and identify the correct answer :A. For a solar-cell, the I-V characteristics lies in the IV quadrant of the given graph.B. In a reverse biased pn junction diode, the current measured in (μ A), is due to majo… Answer: 2. A is correct but B is incorrect. Key idea: Check each statement separately. A: A solar cell works as a generator, so its I-V curv... 1
- The output (Y) of the given logic gate is similar to the output of an/a : Answer: 1. AND gate Key idea: Find the output of each first-stage gate, then apply the final NOR gate. With the inputs of each gate joined,... 1
- For the following logic circuit, the truth table is: Answer: 3. A B Y: 0 0 0; 0 1 1; 1 0 1; 1 1 1 The inputs A and B pass through NOT gates, and the results go into a NAND gate. Y=bar A·bar B=A... 1