Common mode rejection ratio is defined as ratio of

Causes of acute graft rejection are

A

Antibody mediated

B

Cell mediated

C

T-cell dependent

D

Irreversible

E

Seen after first six months

Hyperacute rejection of grafts

A

May be minimized by matching blood group

B

Mediated by preformed antibodies

C

Occurs within 2-4 days of transplantation

D

Associated with T-cell mediated reaction

E

Occurs in autograft

In acute rejection of solid organ transplant graft damage is

A

Caused by recognition of donor peptides by cytotoxic T cell

B

Caused by helper T cells

C

Due to preformed antibody

D

Caused by release of macrophage cytokines such as IL-1 & TNF-ï¡

E

Caused by transplant atherosclerosis

During which of the following process does heat rejection takes place in Carnot cycle?

A

Isothermal expansion

B

Isentropic expansion

C

Isothermal compression

D

Isentropic compression

The heat rejection factor (HRF) is given by

A

1 + C.O.P.

B

1 - C.O.P.

C

$$1 + \frac{1}{{{\text{C}}{\text{.O}}{\text{.P}}{\text{.}}}}$$

D

$$1 - \frac{1}{{{\text{C}}{\text{.O}}{\text{.P}}{\text{.}}}}$$

Central ____ Nazrul's rebellion was his rejection of social hierarchy.

A

of

B

in

C

to

D

about

A transistor is connected in CB mode. If it is not connected in CE mode with same bias voltages, the values of IE, IB and IC will ___________

A

remain the same

B

increase

C

decrease

D

none of the above

The common mode gain is ___________

A

very high

B

very low

C

always unity

D

unpredictable

The common mode voltage gain of a differential amplifier is equal to RC divided by

A

r_e

B

2r_e

C

$$\frac{{{{\text{r}}_{\text{e}}}}}{2}$$

D

2R_E

When a transistor is connected in common emitter mode, it with have

A

Negligible input resistance and high output resistance

B

High input resistance and low output resistance

C

Medium input resistance and high output resistance

D

Low input resistance as well as output resistance

Common mode rejection ratio is defined as ratio of

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