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

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

Which of the following heart valves are mechanical valves? i. Ball Valve ii. Autograft Valve iii. Xenograft Valve iv. Single Leaflet Valve v. Homograft Valve vi. Bi leaflet Valves

A

i, ii, iv, v

B

i, iv, vi

C

ii, iii, v

D

iii, v, vi

A 2" gate valve fitted in a pipe is replaced by a similar globe valve. Pressure drop in gate valve was Δp. For the same discharge, the pressure drop across globe valve is

A

Δp

B

> Δp

C

Δp²

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

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 $${\text{K}}{{\text{h}}_{\text{d}}}$$

Assertion (A): DC servomotors are more commonly used in armature controlled mode than field controlled mode. Reason (R): Armature controlled Dc motors have higher starting torque than fiels controlled motors.

A

Both A and R are true and R is the correct explanation of A

B

Both A and R are true but R is not correct explanation of A

C

A is true but R is false

D

A is false but R is true

When the speed of the engine is controlled by means of a valve in a steam pipe, which regulates the pressure of steam entering the engine, then the governing is known as

A

Throttle governing

B

Cut-off governing

C

By-pass governing

D

None of these

In throttle governing, flow rate is controlled by steam control valve.

A

True

B

False

Which of the following statements are true/false?
1. Governing body of ILO is the executive council of the ILO and meets three times a year in Geneva.
2. The governing body is composed of 56 titular members and 66 deputy members.
3. Ten of the titular government seats are permanently held by States of chief industrial importance.
4. The non-permanent government members are elected by the conference every three years.

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

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

Related Questions