tender for supply of mechanical lab equipment = limited-mechanical lab equipments 2 temperature measurement activities to perform: i) construct a circuit to measure temperature of liquid using thermistor or thermocouple or rtd. ii) also find the graphical relationship between input and output. 3 behaviour of proximity sensors activities to perform: i) observe the behavior of inductive proximity sensor and capacitive proximity sensor for different material samples. ii) interface relay and buzzer with sensors to test the output. 4 performance of light sensor ii) construct a circuit to measure the speed of the motor using optical sensor. 5 performance of ultrasonic and moisture sensors activities to perform: i)interface ultrasonic sensor with arduino and measure the distance of the object. ii) interface moisture sensor with arduino and measure the moisture content in the soil. 6 observe the behaviour of transistor as a switch activities to perform: i)construct a circuit to get on/off control on dc motor using push button, spst, vpat-02m 10,625.00 spdt and limit switch. ii) construct a circuit to get on/off control on dc motor using transistor and relay. 7 servo motor control with an arduino activities to perform: i)construct an arduino based circuit to sweeps the shaft of servo motor back and forth across 180 degree. ii) interface potentiometer with arduino and based on its position get the control of servo motor shaft.