23) Which of the following statements are correct when related to a thermodynamic system? 1) Internal energy is a property 2) Internal energy is path independent 3) Internal energy is path dependent 4) Internal energy is the area u nder the PV curve

24) On a hot day at Chennai, an oil tanker was loaded with 40000 litres of diesel fuel. The tanker was then driven to Ooty where the temperature was 20 K lower than in Chennai and the entire load was delivered at Ooty. If the coefficient of volume expansion fo

25) Pressure intensity at a point in a fluid at rest is 4 N/square centimeter. The corresponding height of water would be (assume g = 10 m/square second)

26) The head of water over an orifice of area 0.1 square meter is 5 m. The actual discharge in cubic meter per second if Cd=0.4 (assume g = 10 m/square second) is

27) Two mating spur gears have 40 and 120 teeth respectively. The pinion transmits a torque of 20 Nm rotating at 1200 rpm. The Torque transmitted by the gear is