Composite Walls Apparatus:
The apparatus consists of a pair of M.S. plates, Bakelite, brass/aluminum. These plates in series on either side of the heater form a composite wall. The whole unit is clamped in a frame, which can be viewed through the Perspex sheet. The thermocouple tapings enables us to find out the conductivity and resistance of the composite walls.


1.Heater- Mica healer of dia. 250 mm.
        a) M.S. plates of thickness 25mm & dia. 250mm.-2 nos.
        b) Bakelite plates of thickness 10mm & dia. 250mm.-2 nos.
                                                                                                                           c)Brass/Aluminum plates of thickness 15mm & dia. 250mm.-2nos
                                                                                                                   3.Dimmerstat - 2 A capacity.
                                                                                                                   4.Measurements ---
                                                                                                                           a) voltmeter and an Ammeter to measure input power.
                                                                                                                           b) Multichannel digital temperature indicator to measure temperatures at- various points.

                                                                                                                    A technical manual accompanies the unit.

                                                                                                                   SERVICES REQUIRED:

                                                                                                                   230 V, A.C. stabilized supply along with earthing connection.
                                                                                                                   Bench area Im x lm x 0.5m height

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