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In this question, three statements are given followed by four conclusions. Choose the Conclusion(s) which best fit(s) logically. Statements : 1) All gold are platinum. 2) Some platinum are silver. 3) All silver are diamonds. Conclusions : I. Some diamonds are platinum. II. Some diamonds are gold. III. Some silver are gold. IV. Some platinum are diamonds.
The owner of PC Jewellers has a brick of 38 pt. platinum and 19 pt. platinum. He wanted to obtain a brick of 30 pt. platinum, weighing 190 grams by melting these 2 bricks. Find how much of each must be melted to obtain the required bar? (Given: pure platinum is 95 pt.)
The following data pertains to the junction of a thermocouple wire used to measure the temperature of the gas stream. Density = 8500 kg/m3, specific heat = 325 J/kg K, thermal conductivity = 40 W/m K and the heat transfer coefficient between the junction and gas = 215 W/m2 K. If thermocouple junction can be approximated as 1 mm diameter sphere, determine how long it will take for the thermocouple to read 99% of the initial temperature difference
A thermocouple junction in the form of 4 mm radius sphere is to be used to measure the temperature of a gas stream. The junction is initially at 35 degree Celsius and is placed in a gas stream which is at 300 degree Celsius. The thermocouple is removed from the hot gas stream after 10 seconds and kept in still air at 25 degree Celsius with convective coefficient 10 W/m2 K. Find out the time constant of the thermocouple. Assume the thermos-physical properties as given below h = 37.5 W/m2 K p = 7500 kg/m3 c = 400 J/kg K
A cinema house has 600 people. \(26\frac{2}{3}{\rm{\% }}\) People buy premium tickets and \(33\frac{1}{3}{\rm{\% }}\) People buy gold tickets and 40% of people buy platinum tickets. Only 5% of people buy both platinum and gold tickets and 10% of people buy both premium and platinum tickets and \(6\frac{2}{3}{\rm{\% }}\) of people buy both premium and gold tickets and 30 people buy all three types of tickets. Find the number of people who buy only one type of ticket.
Severe corrosion of metals occurred when coupled with platinum is due to the higher current density for hydrogen evolution but not due to the reversible potential of the platinum-platinum ion electrode.
The ratio platinum to silver in a bracelet is 5 : 7. If the price of platinum is 1/10th the price of silver, find the cost of the bracelet if the cost of platinum in the bracelet is 24000 rupees.
The catalyst materials most commonly used are platinum, palladium and rhodium.
The sensitivity of thermocouple is defined as the time required by thermocouple to reach how much percentage of its steady state values?
A J-type thermocouple has an output voltage Vθ = (13650 + 50 θx) μV, where θx is the junction temperature in Celsius (°C). The thermocouple is used with reference junction compensation, as shown in the figure. The Instrumentation amplifier used has a gain G = 20. If θRef is 1 °C, for an input θx of 100 °C, the output Vo of the instrumentation amplifier in millivolt is