. THE POLYTECHNIC, IBADAN

DEPARTMENT OF ELECTRICAL ENGINEERING

SECOND SEMESTER EXAMINATION 2016/2017 ACADEMY SESSION

COURSE TITLE: ELECTRICAL AND ELECTRONIC INSTRUMENTATION 11

COURSE CODE: EEC 216.          CLASS:ND11

TIME ALLOWED: 2 HOURS.

INSTRUCTION: ANSWER QUESTION ONE AND ANY OTHER THREE

QUESTION AND ANSWER

QUESTION ONE

1. Briefly explain a cathode ray oscilloscope                         [6 marks]

CATHODE RAY OSCILLOSCOPE: These are familiar piece of measuring equipment, as no Tv programme with a science content is complete without the display of instantaneous voltage values on an oscilloscope. It is an indispensable instrument in any laboratory where voltage form a simple basic instrument to the sophisticated/complex programmable instrument with digital readout, are written on the oscilloscope, only the principles and main features of these instruments are introduced here.