In nozzle governing the flow rate is controlled by ____________

In comparing the operation of the half-controlled 2-pulse circuit with that of the fully-controlled circuit, which of the following statements are evident? 1. Since half the thyristors are replaced by diodes, a half-controlled converter costs less than a fully-controlled converter. 2. Due to the freewheeling action with a half-controlled bridge-circuit power factor is improved in half-controlled converters. 3. The AC supply current is more distorted due to its zero periods with the half-controlled circuit, compared to a fully-controlled bridge circuit. Select the correct answer using the code given below :

A

1 and 2 only

B

2 and 3 only

C

1 and 3 only

D

1, 2 and 3

The velocity of steam leaving the nozzle (V) is given by (where K = Nozzle coefficient or nozzle efficiency, and hd = Enthalpy or heat drop during expansion of steam in a nozzle)

A

V = 44.72 hd K

B

V = 44.72 K hd

C

V = 44.72 K hd

D

V = 44.72 K hd

The velocity of steam leaving the nozzle (V) is given by (where K = Nozzle coefficient or nozzle efficiency and h_d = Enthalpy or heat drop during expansion of steam in a nozzle)

A

V = 44.72 $${{\text{h}}_{\text{d}}}\sqrt {\text{K}} $$

B

V = 44.72 $${\text{K}}\sqrt {{{\text{h}}_{\text{d}}}} $$

C

V = 44.72$$\sqrt {{\text{K}}{{\text{h}}_{\text{d}}}} $$

D

V = 44.72 $${\text{K}}{{\text{h}}_{\text{d}}}$$

In nozzle governing Every nozzle is controlled by a separate valve.

A

True

B

False

In nozzle governing flow rate is controlled by only ______________

A

closing nozzle

B

opening nozzle

C

closing & opening nozzle

D

none of the mentioned

The Central Information Commission (CIC) on Monday brought Indian cricket governing body BCCI under Right to Information Act. Now, this will enable BCCI to accept all the queries. Which of the following substantiates the given statement? I: The cricket governing body BCCI is the part of the Central Information Commission. II: Under Right to Information Act, BCCI has to answer the queries. III: The cricket governing body BCCI was brought under the Right to Information Act to bring transparency in their administration.

A

Only I

B

Only II and III

C

Only I and II

D

Only I and III

E

All of these

Which of the following statements are true/false?
1. A minimum rate of wages for the time spent by employees for the production of output is minimum time rate.
2. Minimum piece rate is the rate based on the quantity of the output employees have produced.
3. The guaranteed time rate is a minimum rate of remuneration to apply in the case of employees employed on piece work for the purpose of securing to such employees a minimum rate of wages on a time work basis.
4. A minimum rate of remuneration to apply in the case of employees employed on piece work for the purpose of securing to such employees a minimum rate of wages on a time work basis is overtime rate.

A

1, 2, 3 and 4 are true

B

1, 3 are true and 2, 4 are false

C

2, 4 are true and 1, 3 are false

D

3, 4 are true and 2, 1 are false

The energy loss in flow through ven-turimeter is less than that through flow nozzle, because in case of a flow nozzle, the

A

Length is shorter

B

Throat diameter is more

C

Sudden expansion of flow in the downstream occurs

D

Distance between the throat and the inlet is more

When the back pressure of a nozzle is below the designed value of pressure at exit of nozzle, the nozzle is said to be ____________

A

overdamping

B

underdamping

C

chocked

D

none of the mentioned

Statement (I) : Mass flow through the convergent nozzle is maximum when the exit Mach number is 1. Statement (II) : The divergent section is added to convergent nozzle to increase the exit Mach number and not to increase the mass flow rate

A

Both Statement (I) and Statement (II) are individually true and Statement (II) is the correct explanation of Statement (I)

B

Both Statement (I) and Statement (II) are individually true but Statement (II) is NOT the correct explanation of Statement (I)

C

Statement (I) is true but Statement (II) is false

D

Statement (I) is false but Statement (II) is true

In nozzle governing the flow rate is controlled by ____________

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