Chapter 3, Problem 22QAP

Ideal op-amps. R_1= 6 kΩ and R_2= 95 kΩ. Find the voltage gain v_o/v_i of the circuit.

Ideal op-amps. R)1= 16 kΩ and R)2= 56 kΩ. Find the voltage gain v_o/v_i of the circuit.

R is 12 kΩ . Find the Thevenin equivalent resistance.

Assuming an ideal op-amp, design an inverting amplifier with a gain of 25 dB having the largest possible input resistance under the constraint of having to use resistors no larger than 90 kΩ. What's the input resist?

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An American Standard Channel shape must resist a factored tensile load. The length is 15 ft, and there will be two lines of 7/8-in. diameter bolts in the web, as shown in the figure below. Estimate the shear lag factor U to be 0.85. (In a practical design, once the member and bolt layout are selected, the value of U could be computed and the member design could be revised if necessary.) Use A36 steel. For the steel Fy = 36 ksi and F₁ = 58 ksi. Try the tension members given in the table below. Tension member A, (in.²) tw (in.) ry (in.) C10 x 20 5.87 0.379 0.690 C3 × 6 1.76 0.356 0.413 C6 × 8.2 2.39 0.200 0.536 C5 × 9 2.64 0.325 0.486 Bolt lines Select an American Standard Channel shape to resist a factored tensile load of 120 kips. A) C10 × 20 B) C3 × 6 C) C6 x 8.2 D) C5 x 9 -Select- V What is the required gross area? (Express your answer to three significant figures.) Ag = in.2 What is the required effective area? (Express your answer to three significant figures.) Ae = in.2 What is…

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