Abstract: Engine efficiency could be increased if valve timing could change with engine revolutions per minute. Poppet valves are fitted with strong springs which return them to their rest positions after being pushed down by cam lobes. Overcoming the spring loaded camshaft drive train requires a lot of engine power. Valve lift, lift duration and phase cannot be adapted with cam lobes on the camshaft but electromagnetic actuators or hydraulic/pneumatic phasing mechanisms could achieve change...
ABSTRACT: The rate of accidents involving tools, equipment and personnel in many technical college workshops in Rivers State is alarming and this has drastically dropped the students’ academic performances. As a means of reducing accidents to improve the students’ academic performance, this study is undertaking to determine Workshop Safety Standard Compliance on Students’ Academic Performance in Technical Colleges in Rivers State. Descriptive survey research design was employed for this...