WorksheetsCS_Rev1
Total questions: 10
Worksheet time: 20mins
If two blocks G1, G2 are connected in parallel to a summer,overall transfer function is
sum of individual gain G1+G2
product of individual gain G1G2
difference of individual gain G1/G2
closed loop gain G1G2 /(1+G1G2)
For the block diagram in the following figure, the transfer function C/R with negative feedback is
G1G2+G3
(1+G1G2)G3
G1G2G3/(1-G1G2)
G1G2G3/(1+G1G2)
In force current analogy, displacement is analogous to
inductance
resistance
flux
charge
In torque- voltage analogy, moment of inertia is analogous to
capacitance
inverse of inductance
inductance
spring coefficient
example for closed loop system
switch On/Off
Traffic management
street light control
airconditioner
the correct options dc servo motor vs ac servo motor are
a) dc servo motor has nonlinear characteristics whereas ac servo has linear characteristics.
b) dc servo is more efficient that ac servo
c) ac servo motor is like single phase induction motor with high X/R ratio
d) ac servo motor is used for high power applications
false, true, false,false
false, false, true, true
true, true, true, false
true, false, true, false
Gear train is used for
torque magnification and speed magnification
torque reduction and speed reduction
torque magnification and speed reduction
torque reduction and speed magnification
In Force -Current Analogy, Frictional coefficient is analogous to
Resistance
Inductance
Inverse of Resistance
Capacitance
In Torque Current analogy, spring coefficient is analogous to
Inductance
Inverse of Resistance
Capacitance
Inverse of Inductance
a) Stability is more in negative feedback
b). Gain reduces in closed loop system
c). closed loop system is simple and cheap
d).Open loop system is costly and complicated
false, true, false, false
true, true, false, false
false, false, true, false
false, true, false, true
