# The sum of the infinite series, 1+1/2 +1/3+1/4+ ……. Is:

1.  Π

2.  infinity

3.  4

4.  π2/4

4

infinity

Explanation :
No Explanation available for this question

# For the following set of simultaneous equations:                             1.5x-0.5y=2                            4x+2y+3z=9                       7x + y + 5z =10

1.  the solution is unique

2.   infinitely many solutions exist

3.  the equations are incompatible

4.  finite number of multiple solutions exist

4

the equations are incompatible

Explanation :
No Explanation available for this question

# The temperature field in a body  varies according to the equation T(x, y)=x3+4xy The direction of fastest variation in temperature at the point (1,0) is given by

1.

2.

3.

4.

4 Explanation :
No Explanation available for this question

# The order of error is the Simpson's rule for numerical integration with a step size h is

1.  h

2.  h2

3.  h3

4.  h4

4

h4

Explanation :
No Explanation available for this question

# In a radiative heat transfer, a gray surface is one

1.  which appears gray to the eye

2.  whose emissivity is independent of wavelength

3.  which has reflectivity equal to zero

4.  which appears equally bright from all directions

4

whose emissivity is independent of wavelength

Explanation :
No Explanation available for this question

# The specific speed of a centrifugal compressor is generally

1.  higher than that of an axial compressor

2.  less than that of a reciprocating compressor

3.  independent of the type of compressor, but depends only on the size of the compressor

4.  more than the specific speed of the reciprocating compressor but less that of the axial compressor

4

more than the specific speed of the reciprocating compressor but less that of the axial compressor

Explanation :
No Explanation available for this question

# Which among the following is the boiler mounting

1.  Blow of cock

2.  Feed pump

3.  Economiser

4.  Superheater

4

Blow of cock

Explanation :
No Explanation available for this question

1.  zero

2.  Cp/Cv

3.  R

4.  RT

4

R

Explanation :
No Explanation available for this question

# A system undergoes a state change from 1 to 2. According the second law of thermodynamics for the process to be feasible, the entropy change, S2 - S1 of the system

1.  is positive or zero

2.  is negative or zero

3.  is zero

4.  can be positive, negative or zero

4

can be positive, negative or zero

Explanation :
No Explanation available for this question

# Kaplan turbine is

1.  a high head mixed flow turbine

2.  a low axial flow turbine

3.    an outward flow reaction turbine

4.  an impulse inward flow turbine

4