If a 5 KW, 25 litre water heater is switched on for 15 minutes and all the electrical energy goes into the heating of water, then what is the increase in temperature of water? (Take Cp of water = 4 KJ/Kg K.)

Calculate the total losses in the strainer and bends in a pipe, if h = loss due to friction in a pipe.

Two Carnot engines connected in a series combination operate between the temperatures of 200°C and 40°C. Assume that the engines produce equal amount of work and f‌ind the intermediate temperature.

Which of the following options give the NTU of a heat exchanger with heat transfer surface area = A and overall heat transfer coefficient = U, considering it is handling two fluids of heat capacities. C1 and C2 such that C1> C2?

Determine the forward current in a p-n junction diode (having a reverse saturation current rating of 55 nA at 32°C) for a forward voltage drop of 0.52 V. (Take, VT at 32°C =26 mV.)

Which of the following statements is correct?

What is the term used by Tonnies to describe an urban industrial society in which people have impersonal, formal, contractual, and specialized relationships?

What type of relationships are found in a Gesellschaft?

What is the definition of "gentrification"?

What is Genocide?

What is the definition of genocide?