State FOUR advantages of transistor over a thermionic valve. – NABTEB QUESTION

S/No	TRANSISTOR	THEMIONIC VALVE
1	Heat sensitive	Required heat
2	Small size	Large and bulkier
3	Require very little power for operation	Require much more operating power
4	Long life	Short life
5	Low cost	Very cost
6	Non sensitive to shock	Higher sensitive to shock
7	Little weight	Heavier
8	Ruggedness	Fragile