In the lumped system parameter model, the variation of temperature with time is

The Weberian model of bureaucracy has been criticised from a variety of stand points.
Consider the following points in this regard:
1. The Weberian model appears to be a 'machine theory' and a closed system model taking little account of organisational interactions with the environment.
2. The structural features of bureaucracy as laid down by Weber might be suitable for routine and repetitive tasks but these would produce dysfunctional consequences in terms of human behaviour if the jobs would involve innovation and creativity.
3. Weberian model has not been found to respond adequately to the tasks of socioeconomic transformation in the developing countries. These tasks require quick changes whereas the capacity of the Weberian model for adaptation to change is rather slow.
4. Weber's model is confined to the study of formal bureaucratic structure and fails to take notice of the informal structure of bureauracy such as informal relations, informal norms and values, an informal power hierarchy and informal power struggles.
Which of the above points make a valid criticism of the Weberian model? Select the correct answer from below:

A

1 and 3

B

2 and 3

C

1, 2 and 3

D

1, 2, 3 and 4

Consider the following statements with respect to the feedback of the control systems. i. Feedback can improve stability or be harmful to stability if it is not properly applied. ii. Feedback can always improve stability iii. In many situations the feedback can reduce the effect of noise and disturbance on system performance. iv. In general the sensitivity of the system gain of a feedback system of a parameter variation depends on where the parameter is located.

A

i, ii, iii and iv only

B

i, ii and iii only

C

i, iii and iv only

D

i, ii and iv only

Consider the following statements with respect to the feedback of the control systems: 1. Feedback can improve stability or be harmful to stability if it is not properly applied. 2. Feedback can always improve stability 3. In many situations the feedback can reduce the effect of noise and disturbance on system performance. 4. In general the sensitivity of the system gain of a feedback system of a parameter variation depends on where the parameter is located.

A

1,2 and 3 only

B

1,3 and 4 only

C

1,2 and 4 only

D

1,2,3 and 4 only

An egg with mean diameter of 4 cm and initially at 25 degree Celsius is placed in an open boiling water container for 4 minutes and found to be boiled at a particular level. For how long should a similar egg boil at the same level, when refrigerator temperature is 5 degree Celsius? Use lumped parameter theory and assume following properties of egg k = 12 W/m K h = 125 W/m2 K c = 2 k J/kg K p = 1250 kg/m3

A

251.49 seconds

B

261.49 seconds

C

271.49 seconds

D

281.49 seconds

Find out the incorrect statement. Monolithic phase detector is preferred for critical applications as it is: 1. Independent of variation in amplitude 2. Independent of variation in duty cycle of the input waveform 3. Independent of variation in response time

A

1 & 2

B

1 & 3

C

2 & 3

D

1, 2 & 3

When the surface temperature variation inside a solid are periodic in nature, the profile of temperature variation with time may assume

A

Triangular

B

Linear

C

Parabolic

D

Hyperbolic

For the analysis of the transmission system the lumped circuit model can be applied _______

A

always

B

never

C

for small section of the line of length limiting to zero

D

when desired

Lumped parameter delay line consists of________

A

RC networks

B

RL networks

C

LC networks

D

Resistive networks

Linear lumped parameter models are not valid under situations as:

A

Transmission pipe between the hydraulic pump and the motor causes a time lag in transportation of oil from pump to motor

B

Transmission of heat by conduction or convection produces serious transportation lag

C

Transmission pipe causes the time lag and loss of heat by conduction and convection

D

Transmission of pipe causes neither any time lag nor any heat loss

The lumped parameter solution for transient conduction can be conveniently stated as

A

t – t a/t I – t a = 2 exponential (- B I F 0)

B

t – t a/t I – t a = exponential (- B I F 0)

C

t – t a/t I – t a = 3 exponential (- B I F 0)

D

t – t a/t I – t a = 6 exponential (- B I F 0)

In the lumped system parameter model, the variation of temperature with time is

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