1.
(a) An analog voltmeter with accuracy ±4% having selected ranges 10V, 50V
100V and 200V is used to measure an unknown voltage. How do you select
the range of the meter for proper measurement?
(2%)
(b) If a voltage of 54.9V is being measured, which voltage range should be
used? Find the possible range of the measured reading.
(4%)
2.
(a) Solve the differential equation $y'' + 4y = 9t$ using Laplace transforms,
where $y(0) = 0$, $y'(0) = 7$
(8%)
(b) Using the Laplace table to find the Laplace Transform of
$\frac{t^2 - 3te^t + \sin 2t}{2}$
(4%)
3.
(a) Determine the pole(s) and the zero(s) of the following transfer function.
$G(s) = \frac{6(s - 7)}{s(s^2 + 4s + 3)}$
(5%)
(b) Simplify the block diagrams in Figure Q3(b) to single block and determine
the overall transfer equation.
(8%)
(c) Reduce the following block diagram shown in Figure 3(c) to unity
feedback form.
(4%)
