Important RGPV Question
EX-504(A), Industrial Electronics
V Sem, EX
UNIT 1
Q.1 Explain the operation of Zener diode voltage regulator. (RGPV June 2020, RGPV Dec 2020)
Q.2 Discuss the operation of single phase half wave rectifier with RE load. Also derive its average output voltage equations. (RGPV June 2020)
Q.3 Derive the expressions for average output voltage and RMS output voltage of single phase semiconverter. (RGPV June 2020)
Q.4 Draw the circuit of a second order Butterworth active low pass filter and derive its transfer function. (RGPV June 2020)
Q.5 Explain the switching performance of BJT with relevant waveforms indicating clearly the turn-on, turn-off times and their components. Also define the term safe operating. (RGPV June 2020)
Q.6 Draw the block diagram and explain the operation of SMPS which can be employed for low power applications and other for high power applications. (RGPV June 2020)
Q.7 Explain in detail about harmonic improvement method of controlled rectifier. (RGPV Dec 2020)
Q.8 Derive the output voltage for full wave fully controlled rectifier and find the firing angle for maximum output. (RGPV Dec 2020)
Q.9 Draw and explain the three phase half controlled converter operation with R, RL, RE load and derive the average and rms valve of output voltage and power factor. (RGPV Dec 2020)
Q.10 Explain the working of single phase bridge and draw its output voltage waveforms rectifier. (RGPV Dec 2020)
Q.11 Explain the working of current commutated chopper with aid of circuit diagram and necessary waveforms. Derive an expression for its output voltage. (RGPV Dec 2020)
UNIT 2
Q.1 Define latching current and holding current. Distinguish between holding current and latching current of SCR. (RGPV June 2020)
Q.2 Discuss the different modes of operation of thyristor with the help of its static VI characteristics. (RGPV June 2020)
Q.3 Draw and explain the two transistor model of a SCR. Using this model describe the various mechanisms of turning on a thyristor. (RGPV June 2020)
Q.4 Draw the VI characteristics of SCR and mark the holding current and latching current in the characteristic. (RGPV Dec 2020)
UNIT 3
Q.1 Why are IGBT becoming popular in their application to controlled converters? State the advantages of IGBT over MOSFET. (RGPV June 2020)
Q.2 Draw the VI characteristics of SCR and mark the holding current and latching current in the characteristic. How SCR differs from TRIAC? (RGPV June 2020)
Q.3 Compare the following power devices with respect to their advantages and limitations.
i) Power MOSFET
ii) IGBT
iii) TRIAC
iv) MCT
(RGPV June 2020)
Q.4 Explain the principle of operation and draw the characteristics of MOSFET. (RGPV June 2020)
Q.5 Explain the different type of over current and over voltage protection in SCR. (RGPV Dec 2020)
Q.6 Explain in detail about Series and parallel operation of SCR. (RGPV Dec 2020)
Q.7 State and describe power MOSFET on the wheeling basis of construction, principles of operation, applications, rating, input and output characteristics. (RGPV Dec 2020)
Q.8 What is the difference between power diode and signal diode? What are the advantages of GTO over SCR? (RGPV Dec 2020)
Q.9 Define the term pinch off voltage of MOSFET. State the advantages of IGBT over MOSFET. (RGPV Dec 2020)
Q.10 Discuss the transfer, output and switching characteristics of power MOSFET. (RGPV Dec 2020)
Q.11 What is the function of free diodes in controlled rectifier? (RGPV Dec 2020)
Q.12 Explain the structure, different modes of operation and characteristics of TRIAC. (RGPV Dec 2020)
UNIT 4
Q.1 What are the assumptions made from ideal Op-Amp characteristics? Define CMRR and SVRR of an Op-Amp. (RGPV June 2020)
Q.2 Explain the operational amplifier and also explain the ideal and practical characteristics. (RGPV Dec 2020)
UNIT 5
Q.1 What are the advantages of PLC over relays? Explain the functions of PLC-input and output modules. (RGPV June 2020)
Q.2 Explain the block diagram of PLC and how PLC’s are used in microprocessor. (RGPV June 2020)
— Best of Luck for Exam —
