# A displacement sensor (a dial indicator) measures the lateral displacement of a mandrel mounted on the taper hole inside a drill spindle. The mandrel axis is an extension of the drill spindle taper hole axis and the protruding portion of the mandrel surface is perfectly cylindrical, measurements are taken with the sensor placed at two positions P and Q as shown in the figure. The readings are recorded as R = maximum deflection minus minimum deflection, corresponding to sensor position at X, over one rotation If Rp = Rq > 0, which one of the following would be consistent with the observation

1.  The drill spindle rotational axis is coincident with the drill spindle taper hole axis

2.  The drill spindle rotational axis intersects the drill spindle taper hole axis at point P

3.  The drill spindle rotational axis is parallel to the drill spindle taper hole axis

4.  The drill spindle rotational axis intersects the drill spindle taper hole axis at point Q

4

The drill spindle rotational axis is parallel to the drill spindle taper hole axis

Explanation :
No Explanation available for this question

# The minimum value of function y=x2 interval [1.5] is

1.  0

2.  1

3.  25

4.  undefined

4

1

Explanation :
No Explanation available for this question

# If a square matrix A is real and symmetric, then the eigen values

1.  are always real

2.  are always real and positive

3.  are always real and non-negative

4.  occur in complex conjugate pairs

4

are always real

Explanation :
No Explanation available for this question

# If (x, y) and if Ψ(x, y) are functions with continuous second derivatives, then   ? (x, y) + i Ψ(x, y) can be expressed as an analytic function of x+iy (i=√-1), when

1.

2.

3.

4.

4

Explanation :
No Explanation available for this question

# The partial differential equation

1.  Degree 1 order 2

2.  Degree 1 order 1

3.  Degree 2 order 1

4.  Degree 2 order 2

4

Degree 1 order 2

Explanation :
No Explanation available for this question

# Which of the following relationships is valid only for reversible processes undergone by a closed system of simple compressible substance (neglect changes in kinetic and potential energy

1.  δQ=dU+δW

2.  T dS=dU+p dV

3.  T dS =dU+ δW

4.  δQ=dU+pdV

4

T dS =dU+ δW

Explanation :
No Explanation available for this question

# Water has a critical specific volume of 0.003155 m3/kg. A closed and rigid steel tank of volume 0.025 m1 contains a mixture of water and steam at 0.1 MPa. The mass of the mixture is 10 kg. The tank is now slowly heated. The liquid level inside the tank

1.  will rise

2.  will fall

3.  will remain constant

4.  may rise or fall depending on the amount of heat transferred

4

will fall

Explanation :
No Explanation available for this question

# Consider an incompressible laminar boundary layer flow over a flat plate of length L, aligned with the direction of an oncoming uniform free stream. If F is the ratio of the drag force on the front half of the plate to the drag force on the rear half, then

1.  F < ½

2.  F=1/2

3.  F=1

4.  F>1

4

F>1

Explanation :
No Explanation available for this question

# In a steady flow through a nozzle, the flow velocity on the nozzle axis is given by v = u0 (1 + 3x/L) i, where x is the distance along the axis of the nozzle from its inlet plane and L is the length of the nozzle. The time required for a fluid particle on the axis to travel from the inlet to the exit plane of the nozzle is

1.  L/u0

2.  (L/3u0)ln 4

3.  L/4 u0

4.  L/2.5 u0

4

(L/3u0)ln 4

Explanation :
No Explanation available for this question

1.  5

2.  1/5

3.  0

4.  ∞

4