Government Polytechnic 2010 Diploma in Hospital Management Industrial Electronics - Question Paper

Q.1 (a) Draw the block diagram of open-loop and closed loop control system
and state difference ranging from them.
07
(b) discuss the principal of photo relay and its circuit using LDR 07
Q.2
(a) Draw and discuss SCR delay timer 07
(b) discuss the working of proximity switch with circuit diagram. 07
OR
(b) discuss ultrasonic flow detector. 07
Q.3
(a) discuss 3 phase full wave bridge-rectifier. 07
(b) discuss SMPS with neat block diagram and define its merits over
linear mode.
07
OR
Q.3 (a) discuss diffrent method of forced communication. 07
(b) discuss the working of fan regulator circuit using diac and triac. 07
Q.4
(a) discuss principal of dielectric heating and state its application 07
(b) Draw and discuss block diagram of PLC 07
OR
Q. four (a) discuss un interrupted power supply. 07
(b) discuss the X-ray machine. 07
Q.5
(a) discuss D.C. motor speed control using chopper. 07
(b) What is cyclo converter? elaborate their types? 07
OR
Q.5 (a) discuss the sequential timer using IC-555. 07
(b) discuss electronic line contactor using thyristor? 07

Earning:   Approval pending.