quize round 2

The octal representation of 195.25 is ?

• (323.20)8

• (303.20)8

• (313.120)8

• (303.02)8

The 2's complement of the binary number (11001100), is ?

• (00110100)2

• (00110000)2

• (00110011)2

• (11110100)2

If a small amount of phosphorus is added to germanium, then: ?

• The conductivity decreases

• Silicon becomes a P-type semiconductor

• Phosphorus becomes an acceptor impurity

• There will be more free electrons than holes

Electron mobility of the following intrinsic elements in descending order is ?

• GaAs, Si, Ge

• Si, Ge, GaAs

• GaAs, Ge, Si

• Ge, Si, GaAs

As the temperature is increased, the voltage across a diode carrying a constant current ?

• remains constant

• increases

• decreases

• may increase or decrease depending on the doping levels in the junction

The voltage stability with time of reference diodes incorporating Zener diodes is comparable to that of which of the following ?

• Dry cells

• Conventional standard cells

• Nickel-cadmium cells

• Lead-acid accumulator batteries

A PIN diode is frequently used as a ?

• switching diode for frequencies up to GHz range

• peak clipper

• voltage regulator

• harmonic generator

Kirchhoff's law is applicable to ?

• d.c. circuits only

• both a.c. and well d.c. circuits

• passive networks only

• a.c. circuits only

A network which contains one or more than one source of e.m.f. is known as ?

• passive network

• active network

• linear network

• non-linear network

A terminal where three or more branches meet is known as ?

• combination

• anode

• node

• terminus