Calendar: 1937-1938 Page 224

228 FACULTY OF liNQINKEBINO type 100 kilowatt Alternator 1- 2- or 3-phase at 750 revolutions per minute specially constructed to give varying volts for laboratory pur poses and 75 shunt wound Motor with commutation poles Siemens shunt wound open type 4-pole 25 Motor Siemens compound wound 4-poIe 550-volt Generator Two Dick Kerr shunt wound open type 4-pole 25 Motors One 20-kilowatt Westing- house Rotary Converter for 1- 2- and 3-phase Alternating Currents One 5-kilowatt 2-phase Rotary Converter and the necessary controlling and measuring apparatus 5-kilowatt variable frequency motor- driven three-phase sine-wave alternator with control equipment and iron-testing apparatus 1500-volt direct-current motor-generator with separate exciter Two Siemens direct-current 11 -kilowatt machines and two Alternating Current machines each of 10 kilowatts output arranged for differential testing Metropolitan-Vickers double squirrel-cage induction motor Two 3-phase Induction Motors arranged for cascade connection and pole changing and variety of single and polyphase machines 14-kilowatt 100 000-volt Trans- former and others of lower voltage traction motor testing equip- ment consisting of two 35 Dick Kerr Motors with controllers rheostats &c for series parallel working and special test-bed mount- ing arranged for testing the motors differentially with and without the gear 10 Westinghouse single-phase series Alternating Current Motor 10 Siemens-Schuckert single-phase series motor Oerlikon three-phase Commutator Motor Reyrolle Mining Type Oil Circuit Breaker Protective Devices and relay equipment The Laboratory is supplied with set of 100 Tudor cells of 140 Ampere-hour capacity and Lancashire Dynamo Co 's Automatic Reversible Booster Electric Supply Meters for Alternate and Direct Currents Apparatus required for examining the instantaneous effects of alternating currents by means of revolv- ing contact makers an Ondograph Oscillographs of the Duddell and Cathode Ray Types and Drysdale Alternating Current Potentio- meter The College is equipped with Radio-telegraphic Antenna and apparatus for Radio-telegraphy and high-frequency alternating currents including high-frequency bridge and thermionic valve testing apparatus The photometric laboratory is equipped with various types of photometer including portable photo-electric types and apparatus for measuring mean spherical candle power and illumi- nation The equipment includes three-phase and six-phase mercury aro-rectifiers both fitted with grid-control gear The laboratories also contain electric furnaces and electric fans together with the necessary testing apparatus The instruments in use are complete and modern and Students are enabled to have practical instruction in every branch of Electrical Engineering The Laboratory is provided with two 4-ton overhead travelling cranes line of shafting capable of transmitting 100 horse power and testing pits