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Q. Assuming ideal opamp, the RMS voltage (in mV) in the output Vo only due to the 230 V, 50 Hz interference is (up to one decimal place) _. Ans: 10.6-11

Q. A 1000 W strain gage (Rg) has a gage factor of 2.5. It is connected in the bridge as shown in figure. The strain gage is subjected with a positive strain of 400 mm/m. The output Vo (in mV) of the bridge is (up to two decimal places) . Ans: 0.48-0.51

Q. The average velocity v of flow of clear water in a 100 cm (inner) diameter tube is measured using the ultrasonic flow meter as shown in the figure. The angle q is 45°. The measured transit times are t1 = 0.9950 ms and t2 = 1.0000 ms. The velocity v (in m/s) in the pipe is (up to one decimal ...

Q. The inductance of a coil is measured using the bridge shown in the figure. Balance (D = 0) is obtained with C1 = 1 nF, R1 = 2.2 MΩ, R2 = 22.2 kΩ, R4 = 10 kΩ. The value of the inductance Lx (in mH) is Ans: 221 - 223

Q. A high Q coil having distributed (self) capacitance is tested with a Q-meter. First resonance at w1 = 106 rad/s is obtained with a capacitance of 990 pF. The second resonance at w2 = 2 ×106 rad/s is obtained with a 240 pF capacitance. The value of the inductance (in mH) of the coil is (up to ...

Q. The voltage and current drawn by a resistive load are measured with a 300 V voltmeter of accuracy ± 1% of full scale and a 5 A ammeter of accuracy ± 0.5% of full scale. The readings obtained are 200 V and 2.5 A. The limiting error (in %) in computing the load resistance is (up to two decimal ...

Q. The Boolean function 𝐹( 𝑋, 𝑌) realized by the given circuit is (A) 𝑋̅ 𝑌 + 𝑋 𝑌̅                 (B)  ̅𝑋 𝑌̅ + 𝑋 𝑌              (C)  𝑋 + 𝑌                   (D)  𝑋̅  ∙ 𝑌̅ Ans: X̅ Y + X Y̅

Q. A 2-bit synchronous counter using two J-K flip flops is shown. The expressions for the inputs to the J-K flip flops are also shown in the figure. The output sequence of the counter starting from Q1Q2 = 00 is (A) 00 → 11 → 10 → 01 → 00 … (B) 00 → 01 → 10 → 11 → 00 … (C) 00 → 01 → 11 ...

Q. The product of sum expression of a Boolean function 𝐹(𝐴, 𝐵, 𝐶) of three variables is given by 𝐹(𝐴, 𝐵, 𝐶) = ( 𝐴 + 𝐵 + 𝐶̅ ) ∙ (𝐴 + 𝐵̅ + 𝐶̅) ∙ ( 𝐴̅ + 𝐵 + 𝐶 ) ∙ ( 𝐴̅ + 𝐵̅ + 𝐶̅ ) The canonical sum of product expression of 𝐹(𝐴, 𝐵, 𝐶) is given by (A) 𝐴̅ 𝐵̅ 𝐶 + 𝐴̅ 𝐵 𝐶 + 𝐴 𝐵̅ 𝐶̅ + 𝐴 𝐵 𝐶 (B) 𝐴̅ 𝐵̅ ...

Q. The circuit given uses ideal opamps. The current I (in mA) drawn from the source vs is (up to two decimal places) _  . Ans: 0.98 - 1