When the axis of the drive wheel is kept parallel to the tube, the cart lifts vertically in cart on track conveyors.

Which is attached to the bottom of the cart at an angle to the rotating tube and drives the cart forward in cart on track conveyors?

A

Spinning Tube

B

Guide wire

C

Drive Wheel

D

Pathway

Statement 1: Bucket conveyors can be divided into close and spaced bucket conveyors. Statement 2: Bucket conveyors can be divided into centrifugal and positive discharge bucket conveyors.

A

True, False

B

True, True

C

False, False

D

False, True

The circumference of the front wheel of a cart is 40 ft long and that of the back wheel is 48 ft long. What is the distance travelled by the cart, when the front wheel has done five more revolutions than the rear wheel ?

A

850 ft

B

950 ft

C

1200 ft

D

1450 ft

A man bought a horse and a cart. If he sold the horse at 10 % loss and the cart at 20 % gain, he would not lose anything; but if he sold the horse at 5% loss and the cart at 5% gain, he would lose Rs. 10 in the bargain. The amount paid by him was Rs._______ for the horse and Rs.________ for the cart.

A

500, 300

B

200, 400

C

400, 200

D

300, 500

According to parallel axis theorem, the moment of inertia of a section about an axis parallel to the axis through center of gravity (i.e. $${I_{\text{P}}}$$) is given by (where, A = Area of the section, $${I_{\text{G}}}$$ = Moment of inertia of the section about an axis passing through its C.G. and h = Distance between C.G. and the parallel axis.)

A

$${I_{\text{P}}} = {I_{\text{G}}} + {\text{A}}{{\text{h}}^2}$$

B

$${I_{\text{P}}} = {I_{\text{G}}} - {\text{A}}{{\text{h}}^2}$$

C

$${I_{\text{P}}} = \frac{{{I_{\text{G}}}}}{{{\text{A}}{{\text{h}}^2}}}$$

D

$${I_{\text{P}}} = \frac{{{\text{A}}{{\text{h}}^2}}}{{{I_{\text{G}}}}}$$

Statement 1: Belt conveyors cannot be used in the inclined position. Statement 2: Screw conveyors can carry more amount of load compared to belt conveyors.

A

True, False

B

True, True

C

False, False

D

False, True

A bunker-conveyor system as shown in the figure works under the following scheme:
i. Bunker and two conveyors running
ii. Bunker and either of the two conveyors running
If the bunker and the two conveyors have identical reliability of 0.9. the system reliability is
Mine System Engineering mcq question image

Mine System Engineering mcq question image

A

0.729

B

0.810

C

0.999

D

0.891

The circumference of the back-sided wheel of a vehicle is 1 m greater than that of front side wheel. To travel 600 m, the front wheel rotates 30 times more than the back wheel. The circumference of the front wheel is :

A

2 m

B

4 m

C

5 m

D

None of these

In order to find the radius of gyration of a car, it is suspended with its axis vertical from three parallel wires 2.5 metres long. The wires are attached to the rim at points spaced 120° apart and at equal distances 250 mm from the axis. It is found that the wheel makes 50 torsional oscillations of small amplitude about its axis in 170 seconds. Find the radius of gyration of the wheel.

A

168 mm

B

268 mm

C

368 mm

D

468 mm

Which of the following drives the carts in Cart on track Conveyors?

A

Static Chains

B

Spinning Tubes

C

Static Rollers

D

Hollow Rollers

When the axis of the drive wheel is kept parallel to the tube, the cart lifts vertically in cart on track conveyors.

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