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Design an op-amp based integrator with a time constant of
1 second, if the capacitor is 1µF. If a constant voltage
of -1V is applied at t=0 seconds, how long will it take to an output of +10V (assume initial capacitor voltage
= -10V). Sketch the input and output waveforms.
Find the impedance of the circuit if supply voltage is V(t)=110sin (20t+30)+220cos(20t-90)v and the current i(t)=30cos(20t+60)-20sin(20t+60)A
Two 5m x 5m thin-walled parallel plates are separated by a distance of 1 mm. Air (properties shown below at the external fluid) flows over the TOP AND BOTTOM of the parallel plate stack. You may assume fully developed hydrodynamic and thermal boundary layers between the parallel plates. Using the drawing and information below, what is the outlet mean temperature of the internal fluid?
Give a complete design analysis of a single plate clutch, with both sides effective, of a vehicle to transmit 22 kW at a speed of 2800 r.p.m. allowing for 25% overload. The pressure intensity is not to exceed 0.08 N/mm2 and the surface speed at the mean radius is not to exceed 2000 m/min. Take coefficient of friction for the surfaces as 0.35 and the outside diameter of the surfaces is to be 1.5 times the inside diameter. The axial thrust is to be provided by 6 springs of about 24 mm coil diameter. For spring material, the safe shear stress is to be limited to 420 MPa and the modulus of rigidity may be taken as 80 kN/mm2
The lines that are used in a technical drawing are called______________?
In Fig. 21-24, the particles have charges q1 q2 100 nC
and q3 q4 200 nC, and distance a 5.0 cm. What are the (a) x
and (b) y components of the net electrostatic force on particle 3?
A series R L circuit is connected to a 110V ac source. If the voltage across the resistor is 85 V, find the power dissipated in the circuit .
A capacitance is made of two parallel conducting plates as shown in the figure and the distance between the plates is 'd'. (i) write the value of capacitance as a function of all the possible dimensions from L,W, h and d (ii) if a dielectric slab of thickness 't' and area of cross-section A (t<d), and relative permittivity Er is inserted in between the plates, what will be the value of capacitance (i) If a voltage V is applied between the plates, find the voltage across various sections (iv) If the dielectric slab is of length L/2 and width 'W and relative permittivity Er and is inserted in between the plates from right end, what is the value of capacitance.
In a crank and slotted lever mechanism, the driving crank is 35 mm long, and the time ratio of cutting stroke to return stroke is 1.6. If the length of working stroke of the ram is 110 mm, find the distance between the fixed centers, and the slotted lever length.
2. Explain the effects of thermal shock on the behaviour and properties of ceramics
• You should identify specific applications to describe the effects on the ceramic.
• Use relevant diagrams to support your findings.
• Write at least 500 words.
