24 MHz clock frequency is applied to a cascaded counter of MOD-3, MOD-4 and MOD-5 counter. The lowest output frequency and the MOD value of the cascaded counter are

Q. A counter timer has a basic clock of 16 MHz. The count value displayed is in error by 1 count. The frequency at which the error in the displayed value is the same whether the counter-time is used in the frequency mode of operation or period mode of operation is

Q. A 4-bit MOD-6 ripple counter uses J-K flip-flop. If propagation delay of each flip-flop is 20nsec, then the maximum clock frequency used is______$MHz.$

Q. The three stage Johnson counter as shown in figure below is clocked at a constant frequency of $15MHz$ from the starting state of $Q_2{Q}_1{Q}_0=101$. The frequency of output $Q_2{Q}_1{Q}_0$ will be _____$MHz.$

Q. Name the three different modes of propagation of electromagnetic waves. Explain, using a proper diagram the mode of propagation used in the frequency range above $40MHz$.

Q. Consider the following program segment:
main ( )
{
int counter = 40;
for(; counter;)
counter.....;
printf("%d", counter);